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Cursor 3.4 Adds Multi-Repo Environments and Faster Dockerfile Builds for Cloud Agents

Thu, 21 May 2026 00:00:00 GMT

Cursor 3.4 (May 13, 2026) lets one cloud agent environment include multiple repositories, adds Dockerfile build secrets, layer-cached rebuilds that run 70% faster, and an agent-led setup step that validates credentials before the first run.

async void vs async Task in C#: when each is correct

Wed, 20 May 2026 00:00:00 GMT

async Task is the default and async void is the exception. Use async void only for event handlers, top-level message-loop handlers, and a handful of framework callbacks that demand a void signature. Everywhere else, async Task wins on exceptions, composition, and testability.

EF Core 11 vs Dapper for bulk inserts: real benchmark

Wed, 20 May 2026 00:00:00 GMT

For bulk inserts in .NET 11, neither EF Core nor Dapper wins. SqlBulkCopy does. This is the benchmark, the why, and the seat each tool deserves.

Fix: Cursor's Apply Button Does Nothing on a Large Diff

Wed, 20 May 2026 00:00:00 GMT

Cursor's Apply silently cancels on big files because the Fast Apply model has an implicit size ceiling. Shrink the edit scope, clean git state, or fall back to a unified diff. Six ranked fixes for Cursor 3.3.

NuGet Package Pruning Is On by Default in .NET 10

Wed, 20 May 2026 00:00:00 GMT

NuGet Package Pruning shipped on-by-default for net10.0 projects, cutting transitive vulnerability reports by 70% and restore times by up to 50%.

record vs class vs struct in C#: a decision matrix

Wed, 20 May 2026 00:00:00 GMT

C# 14 gives you four data-type shapes -- class, record class, struct, and record struct. This is the decision matrix: when each one is correct, what each one costs, and the rules that pick for you.

Cloud Functions for Firebase Now Speaks Dart (Experimental)

Tue, 19 May 2026 00:00:00 GMT

Firebase shipped experimental Dart support for Cloud Functions on May 6, 2026. HTTPS and callable triggers, AOT-compiled cold starts, and the Firebase CLI handles compilation.

Fix: Claude Code Reports `MCP server disconnected` Inside WSL

Tue, 19 May 2026 00:00:00 GMT

Why Claude Code shows 'MCP server disconnected' or 'Connection closed' for a working MCP server when launched from WSL2. Covers stdio spawning across the Windows/Linux boundary, npx and node ENOENT, mirrored networking for HTTP servers, VMMem reaping, and how to diagnose the right one with claude --debug.

Fix: C# 14 overload resolution breaking change with Span and ReadOnlySpan

Tue, 19 May 2026 00:00:00 GMT

After upgrading to C# 14 / .NET 10, calls like array.Contains, x.Reverse(), and MemoryMarshal.Cast suddenly bind to different overloads or stop compiling. Here is what changed and how to pin the old behaviour where it matters.

GPT-5.3-Codex Becomes the Copilot Business and Enterprise Base Model

Mon, 18 May 2026 00:00:00 GMT

On May 17, 2026 GitHub flipped the default Copilot model on Business and Enterprise plans from GPT-4.1 to GPT-5.3-Codex. GPT-4.1 stays free until June 1, then it falls under usage-based billing. Here is what changes for pinned models in your repo and CI.

Fix: AndroidX conflict during Flutter Android build

Mon, 18 May 2026 00:00:00 GMT

The fix in 30 seconds: set android.useAndroidX=true and android.enableJetifier=true in android/gradle.properties, then find any plugin still on the old support library and upgrade or replace it.

Fix: Flutter background_fetch plugin requires minSdkVersion 21

Mon, 18 May 2026 00:00:00 GMT

The fix in 30 seconds: set minSdkVersion to 21 (or higher) in android/app/build.gradle. background_fetch is built on Android's JobScheduler, which only exists from API 21.

Fix: framework_version=6.0.0 was not found when launching a .NET 6 binary

Mon, 18 May 2026 00:00:00 GMT

The .NET 6 runtime is gone or mismatched. Either install net6.0 again, roll forward to net8.0 via runtimeconfig, retarget the csproj, or ship self-contained.

Fix: rate_limit_error on Claude Sonnet 4.6 in a Long Agent Loop

Mon, 18 May 2026 00:00:00 GMT

A 429 rate_limit_error on claude-sonnet-4-6 in a long agent loop is almost always ITPM, not RPM. Read retry-after, cache the system prompt, and gate on anthropic-ratelimit-input-tokens-remaining. Step-by-step fix with code.

dotnet new mcpserver Now Ships in the .NET 11 Preview 4 SDK

Sun, 17 May 2026 00:00:00 GMT

.NET 11 Preview 4 bundles the mcpserver project template directly into the SDK. No separate Microsoft.McpServer.ProjectTemplates install, no preview feed dance. Pick stdio or HTTP transport, opt into Native AOT, and dotnet new mcpserver -o MyServer is the whole setup.

Fix: Context Window Exceeded During an Aider Refactor

Sun, 17 May 2026 00:00:00 GMT

Aider 0.86 hit the token limit mid-refactor. The fix is /clear, /drop, --map-tokens, and switching to architect mode with Claude Sonnet 4.6's 1M window. Step-by-step repro, error breakdown, and config.

Fix: Failed to build iOS app with Xcode 16 and Flutter 3.x

Sun, 17 May 2026 00:00:00 GMT

The fix in 60 seconds: upgrade Flutter to 3.24.4 or later, raise the Podfile platform to iOS 13, wipe Pods plus DerivedData, then pod install. The error rarely lives in your Dart code.

Fix: Unhandled Exception: FormatException: Unexpected character when parsing JSON in Dart

Sun, 17 May 2026 00:00:00 GMT

The fix in 30 seconds: your response body is not the JSON you think it is. Print the raw bytes, decode with utf8.decode(response.bodyBytes), and never feed an HTML error page or a BOM-prefixed string to jsonDecode.

Fix: Version solving failed in pubspec.yaml

Sun, 17 May 2026 00:00:00 GMT

The fix in 30 seconds: read the 'because' chain in the error, find the one constraint that boxes pub in, and either widen it or add a dependency_overrides entry. Do not start with flutter clean.

Fix: Provisioning profile doesn't include the currently selected device in MAUI iOS

Sat, 16 May 2026 00:00:00 GMT

The profile Visual Studio picked was generated before this iPhone's UDID was registered. Re-register the device, regenerate the development profile, redownload, redeploy.

Fix: A RenderFlex overflowed by N pixels in Flutter

Sat, 16 May 2026 00:00:00 GMT

The fix in 30 seconds: wrap the offending child in Expanded or Flexible. Then read the rest to learn why Row and Column do not clip, what unbounded constraints actually mean, and which fix is right for each layout.

Fix: Tool Call Arguments Did Not Match Schema in Anthropic Tool Use

Sat, 16 May 2026 00:00:00 GMT

Why your Claude tool call fails schema validation, in both flavours: the API rejecting your tool definition at request time, and Claude returning a tool_use block your runner cannot accept. Concrete fixes for each, with strict mode, oneOf/anyOf, additionalProperties, and the retry loop pattern.

Fix: Unable to find a valid iOS Simulator runtime during MAUI build

Sat, 16 May 2026 00:00:00 GMT

Xcode 15+ ships without bundled iOS simulator runtimes. MAUI fails the build when SupportedOSPlatformVersion has no matching runtime installed. Install one with xcodebuild -downloadPlatform iOS or via Xcode Settings, then verify with xcrun simctl list runtimes.

Flutter 3.44 Splits Material and Cupertino Out of the SDK and Defaults to SwiftPM

Sat, 16 May 2026 00:00:00 GMT

Flutter 3.44 stable freezes Material and Cupertino inside the SDK and points new work at the material_ui and cupertino_ui packages on pub.dev. SwiftPM also becomes the default for iOS and macOS, finally retiring CocoaPods.

.NET 11 Adds Deadlock-Free Process Output Capture

Fri, 15 May 2026 00:00:00 GMT

.NET 11 Preview 4 ships new System.Diagnostics.Process APIs that drain stdout and stderr concurrently, plus one-line run-and-capture helpers and KillOnParentExit.

Fix: Gradle build failed to produce an .apk file in MAUI Android

Fri, 15 May 2026 00:00:00 GMT

Nine out of ten times the real Gradle error is buried higher in the MSBuild log. JDK 17 path, missing maui-android workload, and Windows long paths are the usual root causes.

Fix: MCP Server stdio Hang When Launched From Claude Code

Fri, 15 May 2026 00:00:00 GMT

Why your Model Context Protocol server gets stuck in 'connecting' from Claude Code 2.x and never registers any tools. Covers stdout pollution, the npx install prompt, MCP_TIMEOUT, buffered output, and WSL pitfalls, with verifiable repros.

Fix: A possible object cycle was detected

Thu, 14 May 2026 00:00:00 GMT

System.Text.Json refuses to serialize graphs with back-references. Set ReferenceHandler.IgnoreCycles, project to a DTO, or mark the back-pointer with [JsonIgnore]. Preserve is a last resort.

Fix: SqlException: Timeout expired during EF Core migrations

Thu, 14 May 2026 00:00:00 GMT

Migrations use the design-time DbContext, not your runtime CommandTimeout. Set the timeout via UseSqlServer(o => o.CommandTimeout(...)), the connection string Command Timeout, or Database.SetCommandTimeout before Migrate().

How to Add Retrieval-Augmented Generation to a Claude Code Session

Thu, 14 May 2026 00:00:00 GMT

A 2026 walkthrough for wiring RAG into Claude Code 2.1.x: when agentic grep stops scaling, how to attach a hybrid BM25 + dense vector MCP server, how to wrap a retrieval CLI in a custom skill, and how Anthropic's contextual embeddings technique pushes recall above 92%. Anchored to claude-sonnet-4-6, claude-opus-4-7, and Claude Context 0.x.

MAUI switches to CoreCLR by default on Android, iOS, and Mac Catalyst in .NET 11 Preview 4

Thu, 14 May 2026 00:00:00 GMT

.NET 11 Preview 4 makes CoreCLR the default runtime for MAUI on Android, iOS, Mac Catalyst, and tvOS. Mono is still one MSBuild property away. Here is what changes, what breaks, and how to opt out.

dotnet watch finally reaches MAUI on Android and iOS in .NET 11 Preview 4

Wed, 13 May 2026 00:00:00 GMT

.NET 11 Preview 4 turns on dotnet watch for Android devices, Android emulators, and the iOS Simulator. Edit, save, and the running app updates without a manual rebuild. One csproj gotcha applies to iOS.

Fix: System.Text.Json.JsonException: The JSON value could not be converted

Wed, 13 May 2026 00:00:00 GMT

System.Text.Json throws this when the incoming JSON token doesn't match the CLR target type. Match the JSON to the type, or register a JsonConverter or JsonSerializerOption that bridges them.

Fix: System.Security.Cryptography.CryptographicException: Keyset does not exist

Wed, 13 May 2026 00:00:00 GMT

The certificate's private key lives in a separate Windows key file the current process identity cannot read. Grant ACL on the key, load the PFX with MachineKeySet, or use EphemeralKeySet.

Fix: The command 'dotnet' could not be found on CI

Wed, 13 May 2026 00:00:00 GMT

Your CI runner cannot resolve dotnet because the SDK is not installed for that step, or it is installed but not on PATH. Use actions/setup-dotnet, pin a global.json, and export DOTNET_ROOT and ~/.dotnet/tools.

How to Structure a Monorepo So Claude Code's Context Stays Small

Wed, 13 May 2026 00:00:00 GMT

A 2026 playbook for keeping Claude Code's 200k token context lean in a monorepo: launch from the subtree you are touching, split CLAUDE.md into nested files that load on demand, push path-scoped rules into .claude/rules/, use skills and subagents for the noisy reads, and exclude other teams' files with claudeMdExcludes. Anchored to Claude Code 2.1.x, claude-sonnet-4-6, and claude-opus-4-7.

Cursor Bugbot Adds Default, High, and Custom Effort Levels

Tue, 12 May 2026 00:00:00 GMT

On May 11, 2026, Cursor shipped effort levels for Bugbot. Default finds 0.7 bugs per review, High pushes it to 0.95, and Custom lets you describe in plain English when each mode should kick in.

Fix: System.IO.FileNotFoundException: Could not load file or assembly in a published app

Tue, 12 May 2026 00:00:00 GMT

Runs fine with dotnet run, throws after dotnet publish. The DLL is usually missing from the publish folder, not the runtime. Check deps.json, ProjectReference Private, and trimming.

Fix: InvalidOperationException: Synchronous operations are disallowed

Tue, 12 May 2026 00:00:00 GMT

Replace the Stream.Read or Write call with ReadAsync/WriteAsync. As a last resort, set AllowSynchronousIO on Kestrel, IIS, or per-request via IHttpBodyControlFeature.

Fix: RZ10012: Found markup element with unexpected name in Blazor

Tue, 12 May 2026 00:00:00 GMT

Blazor's Razor compiler emits RZ10012 when a PascalCase tag has no matching component type in scope. Add @using for the component's namespace in _Imports.razor, or @namespace in the component, then rebuild.

How to Cache Multi-Turn Claude Conversations Across API Calls

Tue, 12 May 2026 00:00:00 GMT

Place rolling cache_control breakpoints across messages, respect the 20-block lookback, and refresh the 5-minute TTL automatically so a 50-turn agent loop pays the prefix once, not fifty times. Verified against anthropic 0.42 (Python) and @anthropic-ai/sdk 0.30 (Node) in May 2026.

Cursor 3.3 Adds Build in Parallel, Split PRs, and a Unified PR Review

Mon, 11 May 2026 00:00:00 GMT

Cursor 3.3 (May 7, 2026) ships async subagents that work on independent steps of a plan at the same time, a quick action that splits one chat into multiple pull requests, and a redesigned PR workflow that keeps reviews, commits, and changes in one place.

Fix: dotnet ef migrations add fails with 'Unable to create an object of type DbContext'

Mon, 11 May 2026 00:00:00 GMT

EF Core's design-time tools could not instantiate your DbContext. Either expose a host via WebApplication.CreateBuilder, point to the right startup project, or implement IDesignTimeDbContextFactory.

Fix: MSB3027 Could not copy X to Y. Exceeded retry count of 10. Failed

Mon, 11 May 2026 00:00:00 GMT

MSB3027 means MSBuild retried a file copy 10 times and a process still held the destination. Kill the locking process, exclude bin/obj from antivirus, or raise CopyRetryCount.

Fix: The type or namespace name 'X' could not be found (after adding a project reference)

Mon, 11 May 2026 00:00:00 GMT

CS0246 right after a fresh ProjectReference is almost always a TargetFramework mismatch, a stale obj folder, or a missing using directive. Five fixes in order of likelihood.

How to Set Up an LLM-as-Judge Eval Harness for a Coding Agent

Mon, 11 May 2026 00:00:00 GMT

Build a working LLM-as-judge eval harness for a coding agent in Python: golden tasks, deterministic checks, a rubric judge on Claude Sonnet 4.6, calibration against human labels, and a CI gate that fails the build when scores regress.

GitHub Copilot Drops Claude Sonnet 4 From Every Surface

Sun, 10 May 2026 00:00:00 GMT

GitHub deprecated claude-sonnet-4 on May 6, 2026 across Copilot Chat, inline edits, ask and agent modes, and code completions. Recommended migration target is Claude Sonnet 4.6. What to grep for in your repo before the next pinned model selection silently breaks.

Fix: Cannot consume scoped service 'X' from singleton 'Y'

Sun, 10 May 2026 00:00:00 GMT

ASP.NET Core's scope validation throws this when a singleton would capture a scoped dependency for the rest of the process. Make the consumer scoped, or take IServiceScopeFactory and create a scope on demand.

Fix: PlatformNotSupportedException: Operation is not supported on this platform in Native AOT

Sun, 10 May 2026 00:00:00 GMT

Native AOT strips the JIT and the interpreter, so reflection emit, expression-tree compilation, and unseen MakeGenericType throw at runtime. Find the call via IL3050 and replace it with a source generator or a pre-baked path.

Fix: Unable to resolve service for type 'X' while attempting to activate 'Y'

Sun, 10 May 2026 00:00:00 GMT

ASP.NET Core throws this when a constructor asks for a type that was never registered, was registered on the wrong container, or was added after the host was built. Three concrete fixes cover almost every case.

How to Pipe Cursor's Context to an Aider Session for Multi-Agent Refactors

Sun, 10 May 2026 00:00:00 GMT

Cursor is the best place to plan a refactor. Aider is the best place to execute it from a terminal with cheap models and atomic git commits. This guide shows the exact pipe: dump the Cursor chat to markdown, hand it to Aider as a read-only context file, and run an architect/editor split that finishes the work.

Fix: TaskCanceledException: A task was canceled in HttpClient

Sat, 09 May 2026 00:00:00 GMT

HttpClient throws TaskCanceledException for three different reasons: timeout, caller cancellation, or a connection-level abort. Tell them apart with InnerException and CancellationToken.IsCancellationRequested, then fix the right one.

Copilot Studio's .NET 10 WebAssembly upgrade: 20% cold path, 5% warm

Fri, 08 May 2026 00:00:00 GMT

Microsoft moved Copilot Studio's WASM engine from .NET 8 to .NET 10. The dual JIT/AOT package, fingerprinting, and WasmStripILAfterAOT explain the numbers.

Fix: The JSON value could not be converted to System.DateTime

Fri, 08 May 2026 00:00:00 GMT

System.Text.Json only accepts ISO 8601 strings for DateTime. Send 2026-05-08T14:00:00Z or register a JsonConverter that parses your format. Empty strings and Unix timestamps both throw.

How to Write a Claude Code Subagent That Runs Browser Tests

Fri, 08 May 2026 00:00:00 GMT

Build a project-scoped Claude Code subagent that drives Playwright in a real browser, scoped to its own MCP server so the main session never sees the 25 browser_* tools. Covers the .claude/agents/browser-tester.md frontmatter, mcpServers inline definition, allowed tool list, isolation: worktree, the Playwright Test Agents init flow, and the Sonnet-vs-Haiku model choice.

Microsoft Agent Framework workflows now survive process restarts via the Durable Task stack

Thu, 07 May 2026 00:00:00 GMT

Wrap an Agent Framework Workflow in Microsoft.Agents.AI.DurableTask and each executor step is checkpointed. Crash, redeploy, restart - the run continues where it stopped.

Fix: The instance of entity type cannot be tracked because another instance with the same key value is already being tracked

Thu, 07 May 2026 00:00:00 GMT

EF Core 11 throws when two objects share a primary key inside one DbContext. Detach the old one or update it in place. AsNoTracking on the read prevents the collision.

Fix: A second operation was started on this context instance before a previous operation completed

Thu, 07 May 2026 00:00:00 GMT

EF Core throws when two awaits run in parallel on the same DbContext. Await each call sequentially, or get a new DbContext per concurrent unit of work via IDbContextFactory.

How to Give a Copilot Agent Skill Access to Your Repo Conventions

Thu, 07 May 2026 00:00:00 GMT

Turn the unwritten rules in your repo into a SKILL.md that GitHub Copilot loads on demand. Frontmatter, descriptions that route, file references, and how to verify it actually fires.

Migrate a high-performance Xamarin.Forms ListView to MAUI CollectionView

Thu, 07 May 2026 00:00:00 GMT

Step-by-step migration from Xamarin.Forms 5.0 ListView to .NET MAUI 11 CollectionView for apps that already squeezed performance out of ListView. Covers cell recycling, virtualization, grouping, pull-to-refresh, context actions, selection, ItemsLayout, EmptyView, and the gotchas that bite real apps.

Microsoft Agent Framework gates risky tool calls behind FunctionApprovalRequestContent

Wed, 06 May 2026 00:00:00 GMT

Wrap an AIFunction in ApprovalRequiredAIFunction and the agent stops mid-run to ask permission. Here is how the request and response flow works in C#.

How to migrate a Flutter app from GetX to Riverpod

Wed, 06 May 2026 00:00:00 GMT

Step-by-step migration from GetX to Riverpod 3.x in a real Flutter app: GetxController to Notifier, .obs to derived providers, Get.find to ref.watch, Get.to to go_router, plus snackbars, theming, and tests. Tested on Flutter 3.27.1, Dart 3.11, flutter_riverpod 3.3.1.

How to profile jank in a Flutter app with DevTools

Wed, 06 May 2026 00:00:00 GMT

Step-by-step guide to finding and fixing jank in Flutter 3.27 with DevTools: profile mode, the Performance overlay, the Frame Analysis tab, the CPU Profiler, raster vs UI thread, shader warm-up, and Impeller-specific gotchas. Tested on Flutter 3.27.1, Dart 3.11, DevTools 2.40.

How to Run a Semantic Kernel Plugin From a BackgroundService

Wed, 06 May 2026 00:00:00 GMT

Wire a Microsoft.SemanticKernel 1.75.0 plugin into a hosted BackgroundService on .NET 11 and invoke its KernelFunctions on a PeriodicTimer schedule. Covers DI scopes, [KernelFunction] resolution, prompt-cache-friendly invocation, cancellation, and the lifetime gotchas that bite when you move a plugin off the request path.

How to set the accent color in a Flutter app with Material 3 ColorScheme

Wed, 06 May 2026 00:00:00 GMT

The 2026 way to set an accent color in Flutter with Material 3: ColorScheme.fromSeed, the colorSchemeSeed shorthand, the seven DynamicSchemeVariant options, dark mode, dynamic_color on Android 12+, and harmonizing brand colors. Tested on Flutter 3.27.1 and Dart 3.11.

Claude Code 2.1.128 Loads Plugins From .zip Archives and Stops Dropping Unpushed Commits

Tue, 05 May 2026 00:00:00 GMT

Claude Code v2.1.128 (May 4, 2026) ships --plugin-dir support for .zip archives, makes EnterWorktree branch from local HEAD, and stops the CLI from leaking its own OTLP endpoint into Bash subprocesses.

Fix: System.InvalidOperationException: No connection string named 'DefaultConnection' could be found

Tue, 05 May 2026 00:00:00 GMT

If GetConnectionString returns null in .NET 11, your appsettings.json is missing the key, not copied to the build output, or the wrong environment file is being selected. Three checks fix 95% of cases.

How to add platform-specific code in Flutter without plugins

Tue, 05 May 2026 00:00:00 GMT

Call native Android (Kotlin) and iOS (Swift) code from a Flutter 3.x app without writing a plugin: MethodChannel, EventChannel, BasicMessageChannel, the StandardMessageCodec type table, threading rules, and the cases where a plugin still wins.

How to Expose an EF Core Database to an AI Agent via MCP

Tue, 05 May 2026 00:00:00 GMT

Wire an EF Core 10 DbContext into a Model Context Protocol server so Claude Code, Cursor, or any compliant client can run safe, scoped queries against your database. Covers IDbContextFactory lifetime, read-only projections, schema discovery tools, AsNoTracking, parameterised filters, row-level scoping, and the destructive-tool gates you need before letting an agent touch UPDATE.

How to write a Dart isolate for CPU-bound work

Tue, 05 May 2026 00:00:00 GMT

When async/await is not enough: spawn a Dart isolate to run CPU-bound work off the UI thread. Isolate.run, Flutter's compute, long-lived workers with SendPort/ReceivePort, what can cross the boundary, and the JS/web caveat. Tested on Dart 3.11 and Flutter 3.27.1.

Cursor Ships a TypeScript SDK That Turns Its Coding Agent Into a Library

Mon, 04 May 2026 00:00:00 GMT

Cursor's new @cursor/sdk public beta exposes the same runtime, harness, and models that drive the desktop app, CLI, and web UI as a TypeScript package. You get sandboxed cloud VMs, subagents, hooks, MCP, and token-based pricing in a few lines of code.

How to convert T[] to ReadOnlyMemory in C# (implicit operator and explicit constructor)

Mon, 04 May 2026 00:00:00 GMT

Three ways to wrap a T[] in a ReadOnlyMemory in .NET 11: the implicit conversion, the explicit constructor, and AsMemory(). When each is the right call.

How to package a .NET MAUI app for the Microsoft Store

Mon, 04 May 2026 00:00:00 GMT

End-to-end guide to packaging a .NET MAUI 11 Windows app as an MSIX, bundling x64/x86/ARM64 into a .msixupload, and submitting through Partner Center: identity reservation, Package.appxmanifest, dotnet publish flags, MakeAppx bundling, and the Store-trusted certificate handoff.

How to target multiple Flutter versions from one CI pipeline

Mon, 04 May 2026 00:00:00 GMT

Practical guide to running one Flutter project against multiple SDK versions in CI: a GitHub Actions matrix with subosito/flutter-action v2, FVM 3 .fvmrc as the source of truth, channel pinning, caching, and the gotchas that bite when the matrix grows past three versions.

Claude Code 2.1.126 Adds `claude project purge` to Wipe All State for a Repo

Sun, 03 May 2026 00:00:00 GMT

Claude Code v2.1.126 ships claude project purge, a new CLI subcommand that deletes every transcript, task, file-history entry, and config block tied to a project path in a single shot. Includes --dry-run, --yes, --interactive, and --all.

How to Add Tool Calling to a Microsoft.Extensions.AI Chat Client

Sun, 03 May 2026 00:00:00 GMT

Wire AIFunctionFactory.Create, ChatOptions.Tools, and ChatClientBuilder.UseFunctionInvocation in Microsoft.Extensions.AI 10.5 so an IChatClient can call your .NET methods automatically. Covers OpenAI and Azure OpenAI providers, the FunctionInvokingChatClient knobs that actually matter (iteration limits, concurrent calls, approval prompts, error handling), and streaming responses with tools.

How to implement drag-and-drop in .NET MAUI 11

Sun, 03 May 2026 00:00:00 GMT

End-to-end drag-and-drop in .NET MAUI 11: DragGestureRecognizer, DropGestureRecognizer, custom DataPackage payloads, AcceptedOperation, gesture position, and the per-platform PlatformArgs traps on Android, iOS, Mac Catalyst, and Windows.

How to support dark mode correctly in a .NET MAUI app

Sun, 03 May 2026 00:00:00 GMT

End-to-end dark mode in .NET MAUI 11: AppThemeBinding, SetAppThemeColor, RequestedTheme, UserAppTheme override with persistence, the RequestedThemeChanged event, and the per-platform Info.plist and MainActivity bits that the docs gloss over.

How to use Tailwind CSS with Blazor WebAssembly in .NET 11

Sun, 03 May 2026 00:00:00 GMT

A complete .NET 11 setup for Tailwind CSS v4 in a Blazor WebAssembly app: standalone CLI (no Node), MSBuild target, @source directives for Razor and CSS isolation files, and a publish pipeline that survives Native AOT.

Agent Governance Toolkit puts a YAML policy in front of every MCP tool call from .NET

Sat, 02 May 2026 00:00:00 GMT

Microsoft's new Microsoft.AgentGovernance package wraps MCP tool calls with a policy kernel, a security scanner, and a response sanitizer. Here is what each piece does and how the wiring looks in C#.

How to detect N+1 queries in EF Core 11

Sat, 02 May 2026 00:00:00 GMT

A practical guide to spotting N+1 queries in EF Core 11: what the pattern looks like in real code, how to surface it via logging, diagnostic interceptors, OpenTelemetry, and a test that fails the build when a hot path regresses.

How to use compiled queries with EF Core for hot paths

Sat, 02 May 2026 00:00:00 GMT

A practical guide to EF Core 11 compiled queries: when EF.CompileAsyncQuery actually wins, the static-field pattern, the Include and tracking gotchas, and how to benchmark before and after so you can prove it was worth the extra ceremony.

How to write a MAUI app that runs on Windows and macOS only (no mobile)

Sat, 02 May 2026 00:00:00 GMT

Strip Android and iOS from a .NET MAUI 11 project so it ships Windows and Mac Catalyst only: the csproj edits, the workload commands, and the multi-targeting that keeps your code clean.

How to Migrate a Semantic Kernel Plugin to an MCP Server

Sat, 02 May 2026 00:00:00 GMT

Take an existing Semantic Kernel plugin with [KernelFunction] methods and turn it into a Model Context Protocol server other agents can call. Covers the drop-in WithTools(kernel) bridge, the native [McpServerTool] rewrite, parameter binding, dependency injection, and the gotchas that bite during the cutover.

How to Run Claude Code in a GitHub Action for Autonomous PR Review

Fri, 01 May 2026 00:00:00 GMT

Wire up anthropics/claude-code-action@v1 so every pull request gets an autonomous Claude Code review with no @claude trigger. Includes the v1 YAML, claude_args for claude-sonnet-4-6 vs claude-opus-4-7, inline-comment tooling, path filters, REVIEW.md, and the choice between the self-hosted action and the managed Code Review research preview.

How to set up structured logging with Serilog and Seq in .NET 11

Fri, 01 May 2026 00:00:00 GMT

A complete guide to wiring Serilog 4.x and Seq 2025.2 into a .NET 11 ASP.NET Core app: AddSerilog vs UseSerilog, two-stage bootstrap logging, JSON configuration, enrichers, request logging, OpenTelemetry trace correlation, API keys, and the production gotchas around buffering, retention, and signal level.

How to use OpenTelemetry with .NET 11 and a free backend

Fri, 01 May 2026 00:00:00 GMT

Wire OpenTelemetry traces, metrics, and logs into a .NET 11 ASP.NET Core app with the OTLP exporter, then ship them to a free, self-hosted backend: the standalone Aspire Dashboard for local dev, Jaeger and SigNoz for self-hosted production, and the OpenTelemetry Collector when you need both.

How to write integration tests against a real SQL Server with Testcontainers

Fri, 01 May 2026 00:00:00 GMT

A complete guide to running ASP.NET Core integration tests against a real SQL Server 2022 using Testcontainers 4.11 and EF Core 11: WebApplicationFactory wiring, IAsyncLifetime, swapping the DbContext registration, applying migrations, parallelism, Ryuk cleanup, and CI gotchas.

VSTest drops Newtonsoft.Json in .NET 11 Preview 4 and what breaks if you relied on it transitively

Fri, 01 May 2026 00:00:00 GMT

.NET 11 Preview 4 and Visual Studio 18.8 ship a VSTest that no longer flows Newtonsoft.Json into your test projects. Builds that quietly used the transitive copy will break with a single PackageReference fix.

Claude Code 2.1.122 Lets You Pick a Bedrock Service Tier From an Env Var

Thu, 30 Apr 2026 00:00:00 GMT

Claude Code v2.1.122 adds the ANTHROPIC_BEDROCK_SERVICE_TIER environment variable, sent as the X-Amzn-Bedrock-Service-Tier header. Set it to flex for a 50 percent discount on agent calls or priority for faster responses, without touching SDK code.

How to add per-endpoint rate limiting in ASP.NET Core 11

Thu, 30 Apr 2026 00:00:00 GMT

A complete guide to per-endpoint rate limiting in ASP.NET Core 11: when to pick fixed window vs sliding window vs token bucket vs concurrency, how RequireRateLimiting and [EnableRateLimiting] differ, partitioning by user or IP, the OnRejected handler, and the distributed deployment pitfall everyone hits.

How to Call the Claude API from a .NET 11 Minimal API with Streaming

Thu, 30 Apr 2026 00:00:00 GMT

Stream Claude responses from an ASP.NET Core 11 minimal API end-to-end: the official Anthropic .NET SDK, TypedResults.ServerSentEvents, SseItem, IAsyncEnumerable, cancellation flow, and the gotchas that buffer your tokens silently. With Claude Sonnet 4.6 and Opus 4.7 examples.

How to use the new System.Threading.Lock type in .NET 11

Thu, 30 Apr 2026 00:00:00 GMT

System.Threading.Lock arrived in .NET 9 and is the default synchronization primitive on .NET 11 and C# 14. This guide shows how to migrate from lock(object), how EnterScope works, and the gotchas around await, dynamic, and downlevel targets.

How to write a source generator for INotifyPropertyChanged

Thu, 30 Apr 2026 00:00:00 GMT

A complete guide to building your own incremental source generator for INotifyPropertyChanged in C# 14 and .NET 11: the IIncrementalGenerator pipeline, marker attributes, partial-class output, the SetProperty pattern, and how to stay AOT-friendly.

cowork-terminal-mcp: Host Terminal Access for Claude Cowork in One MCP Server

Wed, 29 Apr 2026 00:00:00 GMT

cowork-terminal-mcp v0.4.1 bridges Claude Cowork's sandboxed VM to your host shell. One tool, stdio transport, hard-pinned Git Bash on Windows.

Export Claude Code Conversations to PDF With jsonl-to-pdf

Wed, 29 Apr 2026 00:00:00 GMT

A practical guide to turning the JSONL files Claude Code writes under ~/.claude/projects/ into shareable PDFs using jsonl-to-pdf, with sub-agent nesting, secret redaction, compact and dark themes, and CI-friendly batch recipes.

How to Add Prompt Caching to an Anthropic SDK App and Measure the Hit Rate

Wed, 29 Apr 2026 00:00:00 GMT

Add prompt caching to a Python or TypeScript Anthropic SDK app, place cache_control breakpoints correctly, and read cache_read_input_tokens and cache_creation_input_tokens to compute a real hit rate. With pricing math for Claude Sonnet 4.6 and Opus 4.7.

How to detect when a file finishes being written to in .NET

Wed, 29 Apr 2026 00:00:00 GMT

FileSystemWatcher fires Changed before the writer is done. Three reliable patterns for .NET 11 to know a file is fully written: open with FileShare.None, debounce with size stabilization, and the producer-side rename trick that avoids the problem entirely.

How to share validation logic between server and Blazor WebAssembly

Wed, 29 Apr 2026 00:00:00 GMT

The single biggest source of validation drift in a Blazor WebAssembly + ASP.NET Core app is the urge to write the rules twice. This guide walks the only layout that scales in .NET 11: a Shared class library that owns the DTOs and their validators, consumed by both the WASM client (EditForm + DataAnnotationsValidator or Blazored.FluentValidation) and the server (minimal API endpoint filter or MVC model binding), with a tested round-trip that maps server-side ValidationProblemDetails back into the EditContext.

How to use SearchValues correctly in .NET 11

Wed, 29 Apr 2026 00:00:00 GMT

SearchValues beats IndexOfAny by 5x to 250x but only when you use it the way the runtime expects. The cache-as-static rule, the StringComparison gotcha, when not to bother, and the IndexOfAnyExcept inversion trick that nobody documents.

SkiaSharp 4.0 Preview 1: Immutable SKPath, Variable Fonts, and a New Co-Maintainer

Wed, 29 Apr 2026 00:00:00 GMT

SkiaSharp 4.0 Preview 1 lands with Uno Platform as co-maintainer alongside the .NET team. SKPath becomes immutable behind a new SKPathBuilder, and HarfBuzzSharp gets full OpenType variable font axis control.

Asp.Versioning 10.0 finally plays nicely with built-in OpenAPI in .NET 10

Tue, 28 Apr 2026 00:00:00 GMT

Asp.Versioning 10.0 is the first release that targets .NET 10 and the new Microsoft.AspNetCore.OpenApi pipeline. Sander ten Brinke's April 23 walkthrough shows how to register one OpenAPI document per API version with WithDocumentPerVersion().

How to add OpenAPI authentication flows to Swagger UI in .NET 11

Tue, 28 Apr 2026 00:00:00 GMT

In .NET 11 the OpenAPI document is generated by Microsoft.AspNetCore.OpenApi and Swagger UI is no longer in the template. Here is how to wire Bearer, OAuth2 with PKCE, and OpenID Connect so the Authorize button actually works.

How to implement refresh tokens in ASP.NET Core Identity

Tue, 28 Apr 2026 00:00:00 GMT

Two working paths in .NET 11: the built-in MapIdentityApi /refresh endpoint, and a custom JWT setup with refresh token rotation, family tracking, and reuse detection.

How to upload a large file with streaming to Azure Blob Storage

Tue, 28 Apr 2026 00:00:00 GMT

Upload multi-GB files to Azure Blob Storage from .NET 11 without loading them into memory. BlockBlobClient.UploadAsync with StorageTransferOptions, MultipartReader for ASP.NET Core uploads, and the buffering traps that put your payload on the LOH.

How to Write a CLAUDE.md That Actually Changes Model Behaviour

Tue, 28 Apr 2026 00:00:00 GMT

A 2026 playbook for CLAUDE.md files that Claude Code actually follows: the 200-line target, when to use path-scoped rules in .claude/rules/, @import hierarchy and 5-hop max depth, the user-message vs system-prompt gap, the line between CLAUDE.md and auto memory, and when to give up and write a hook instead. Anchored to Claude Code 2.1.x and verified against the official memory docs.

Claude Code 2.1.119 Pulls PRs From GitLab, Bitbucket, and GitHub Enterprise

Mon, 27 Apr 2026 00:00:00 GMT

Claude Code v2.1.119 expands --from-pr beyond github.com. The CLI now accepts GitLab merge-request, Bitbucket pull-request, and GitHub Enterprise PR URLs, and a new prUrlTemplate setting points the footer PR badge at the right code-review host.

How to reduce cold-start time for a .NET 11 AWS Lambda

Mon, 27 Apr 2026 00:00:00 GMT

A practical, version-specific playbook for cutting .NET 11 Lambda cold starts. Covers Native AOT on provided.al2023, ReadyToRun, SnapStart on the managed dotnet10 runtime, memory tuning, static reuse, trim safety, and how to actually read INIT_DURATION.

How to Schedule a Recurring Claude Code Task That Triages GitHub Issues

Mon, 27 Apr 2026 00:00:00 GMT

Three ways to put Claude Code on a schedule that triages GitHub issues unattended in 2026: cloud Routines (the new /schedule), the claude-code-action v1 with cron + issues.opened, and the session-scoped /loop. Includes a runnable Routine prompt, a complete GitHub Actions YAML, jitter and identity gotchas, and when to pick which.

How to use Native AOT with ASP.NET Core minimal APIs

Mon, 27 Apr 2026 00:00:00 GMT

A complete .NET 11 walkthrough for shipping an ASP.NET Core minimal API with Native AOT: PublishAot, CreateSlimBuilder, source-generated JSON, the AddControllers limitation, IL2026 / IL3050 warnings, and EnableRequestDelegateGenerator for library projects.

How to warm up EF Core's model before the first query

Mon, 27 Apr 2026 00:00:00 GMT

EF Core builds its conceptual model lazily on the first DbContext access, which is why the first query in a fresh process is several hundred milliseconds slower than every query after it. This guide covers the three real fixes in EF Core 11: a startup IHostedService that touches Model and opens a connection, dotnet ef dbcontext optimize to ship a precompiled model, and the cache-key footguns that silently rebuild the model anyway.

GitHub Copilot Chat BYOK Goes GA in VS Code: Anthropic, Ollama, Foundry Local

Sun, 26 Apr 2026 00:00:00 GMT

GitHub Copilot for VS Code shipped Bring Your Own Key on April 22, 2026. Wire your own Anthropic, OpenAI, Gemini, OpenRouter, or Azure account into Chat, or point at a local Ollama or Foundry Local model. Billing skips the Copilot quota and goes straight to the provider.

How to add a global exception filter in ASP.NET Core 11

Sun, 26 Apr 2026 00:00:00 GMT

A complete guide to global exception handling in ASP.NET Core 11: why IExceptionFilter is the wrong tool, how IExceptionHandler and UseExceptionHandler work together, ProblemDetails responses, multi-handler chains, and the .NET 10 diagnostics suppression breaking change.

How to Build a Custom MCP Server in C# on .NET 11

Sun, 26 Apr 2026 00:00:00 GMT

Build a working Model Context Protocol server in C# 14 / .NET 11 using the official ModelContextProtocol 1.2 SDK. Covers stdio transport, [McpServerTool] attributes, dependency injection, the stderr logging trap, and registration with Claude Code, Claude Desktop, and VS Code.

How to mock DbContext without breaking change tracking

Sun, 26 Apr 2026 00:00:00 GMT

Mocking DbContext directly silently breaks ChangeTracker, which is why Microsoft discourages it. This guide shows the two patterns that actually work in EF Core 11: SQLite in-memory with a kept-open connection so the real ChangeTracker runs, and the repository pattern that lifts EF Core out of the test entirely.

How to unit-test code that uses HttpClient

Sun, 26 Apr 2026 00:00:00 GMT

A complete guide to testing HttpClient in .NET 11: why you should not mock HttpClient directly, how to write a stub HttpMessageHandler, swapping the primary handler with IHttpClientFactory, verifying Polly retries, and the WireMock.Net option.

Aspire 13.2.4 Patches CVE-2026-40894: Baggage Header DoS in OpenTelemetry .NET

Sat, 25 Apr 2026 00:00:00 GMT

Aspire 13.2.4 ships an OpenTelemetry bump for CVE-2026-40894, a Gen0 allocation amplification in baggage, B3, and Jaeger propagator parsing. Update OpenTelemetry.Api and OpenTelemetry.Extensions.Propagators to 1.15.3 even if you are not on Aspire.

How to Build a Custom MCP Server in Python with the Official SDK

Sat, 25 Apr 2026 00:00:00 GMT

Build a working Model Context Protocol server in Python using the official mcp 1.27 SDK and FastMCP. Covers Pydantic schemas, the stdio stdout trap, mcp dev / mcp install, and registration with Claude Desktop and Claude Code.

How to profile a .NET app with dotnet-trace and read the output

Sat, 25 Apr 2026 00:00:00 GMT

A complete guide to profiling .NET 11 apps with dotnet-trace: install, pick the right profile, capture from startup, and read the .nettrace output in PerfView, Visual Studio, Speedscope, or Perfetto.

How to use Channels instead of BlockingCollection in C#

Sat, 25 Apr 2026 00:00:00 GMT

System.Threading.Channels is the async-first replacement for BlockingCollection in .NET 11. This guide shows how to migrate, how to choose bounded vs unbounded, and how to handle backpressure, cancellation, and graceful shutdown without deadlocking.

How to write a custom JsonConverter in System.Text.Json

Sat, 25 Apr 2026 00:00:00 GMT

A complete guide to writing custom JsonConverter for System.Text.Json in .NET 11: when you actually need one, how to navigate Utf8JsonReader correctly, how to handle generics with JsonConverterFactory, and how to stay AOT-friendly.

.NET 10 on Ubuntu 26.04: resolute Container Tags and Native AOT in the Archive

Fri, 24 Apr 2026 00:00:00 GMT

Ubuntu 26.04 Resolute Raccoon ships with .NET 10 in the archive, introduces -resolute container tags to replace -noble, and packages Native AOT tooling via dotnet-sdk-aot-10.0.

How to Build a Custom MCP Server in TypeScript That Wraps a CLI

Fri, 24 Apr 2026 00:00:00 GMT

Step-by-step guide to wrapping any command-line tool as a Model Context Protocol server using the TypeScript SDK 1.29. Covers the stdout trap, child_process patterns, error propagation, and a full working git server.

How to Generate Strongly Typed Client Code from an OpenAPI Spec in .NET 11

Fri, 24 Apr 2026 00:00:00 GMT

Use Kiota, Microsoft's official OpenAPI code generator, to produce a fluent, strongly typed C# client from any OpenAPI spec. Step-by-step: install, generate, wire into ASP.NET Core DI, and handle authentication.

How to read a large CSV in .NET 11 without running out of memory

Fri, 24 Apr 2026 00:00:00 GMT

Stream a multi-gigabyte CSV in .NET 11 without OutOfMemoryException. File.ReadLines, CsvHelper, Sylvan, and Pipelines compared with code and measurements.

How to stream a file from an ASP.NET Core endpoint without buffering

Fri, 24 Apr 2026 00:00:00 GMT

Serve large files from ASP.NET Core 11 without loading them into memory. Three tiers: PhysicalFileResult for on-disk files, Results.Stream for arbitrary streams, and Response.BodyWriter for generated payloads -- with code for each.

EF Core 11 Preview 3 Adds RemoveDbContext for Clean Test Provider Swaps

Thu, 23 Apr 2026 00:00:00 GMT

EF Core 11 Preview 3 introduces RemoveDbContext, RemoveExtension, and a parameterless AddPooledDbContextFactory overload, removing the boilerplate around swapping providers in tests and centralizing pooled factory configuration.

How to cancel a long-running Task in C# without deadlocking

Thu, 23 Apr 2026 00:00:00 GMT

Cooperative cancellation with CancellationToken, CancelAsync, Task.WaitAsync, and linked tokens in .NET 11. Plus the blocking patterns that turn a clean cancel into a deadlock.

Azure MCP Server Ships Inside Visual Studio 2022 17.14.30, No Extension Required

Wed, 22 Apr 2026 00:00:00 GMT

Visual Studio 2022 17.14.30 bundles the Azure MCP Server into the Azure development workload. Copilot Chat can hit 230+ Azure tools across 45 services without installing a thing.

How to use IAsyncEnumerable with EF Core 11

Wed, 22 Apr 2026 00:00:00 GMT

EF Core 11 queries implement IAsyncEnumerable directly. Here is how to stream rows with await foreach, when to prefer it over ToListAsync, and the gotchas around connections, tracking, and cancellation.

.NET 10.0.7 Ships Out-of-Band to Fix CVE-2026-40372 in ASP.NET Core Data Protection

Tue, 21 Apr 2026 00:00:00 GMT

A HMAC validation flaw in Microsoft.AspNetCore.DataProtection 10.0.0 through 10.0.6 lets attackers forge ciphertexts. .NET 10.0.7 is the mandatory fix.

How to use records with EF Core 11 correctly

Tue, 21 Apr 2026 00:00:00 GMT

A practical guide to mixing C# records and EF Core 11. Where records fit, where they break change tracking, and how to model value objects, entities, and projections without fighting the framework.

Node.js Addons in C#: .NET Native AOT Replaces C++ and node-gyp

Tue, 21 Apr 2026 00:00:00 GMT

The C# Dev Kit team swapped its C++ Node.js addon for a .NET 10 Native AOT library, using N-API, UnmanagedCallersOnly, and LibraryImport to produce a single .node file without Python or node-gyp.

Visual Studio 18.5's Debugger Agent Turns Copilot Into a Live Bug-Hunting Partner

Tue, 21 Apr 2026 00:00:00 GMT

Visual Studio 18.5 GA ships a guided Debugger Agent workflow in Copilot Chat that forms a hypothesis, sets breakpoints, rides along through a repro, validates against runtime state, and proposes a fix.

Kestrel starts processing HTTP/3 requests before the SETTINGS frame in .NET 11 Preview 3

Mon, 20 Apr 2026 00:00:00 GMT

.NET 11 Preview 3 lets Kestrel serve HTTP/3 requests before the peer's control stream and SETTINGS frame arrive, shaving handshake latency off the first request on every new QUIC connection.

EF Core 11 translates Contains to JSON_CONTAINS on SQL Server 2025

Mon, 20 Apr 2026 00:00:00 GMT

EF Core 11 auto-translates LINQ Contains over JSON collections to the new SQL Server 2025 JSON_CONTAINS function, and adds EF.Functions.JsonContains for path-scoped and mode-specific queries that can hit a JSON index.

How to return multiple values from a method in C# 14

Mon, 20 Apr 2026 00:00:00 GMT

Seven ways to return more than one value from a C# 14 method: named tuples, out parameters, records, structs, deconstruction, and the extension-member trick for types you don't own. Real benchmarks and a decision matrix at the end.

Agent Skills Land in Visual Studio 2026 18.5: Copilot Auto-Discovers SKILL.md From Your Repo

Mon, 20 Apr 2026 00:00:00 GMT

Visual Studio 2026 18.5.0 lets GitHub Copilot load Agent Skills from .github/skills, .claude/skills, and ~/.copilot/skills. Reusable SKILL.md instruction packs travel with your repo.

RyuJIT trims more bounds checks in .NET 11 Preview 3: index-from-end and i + constant

Sun, 19 Apr 2026 00:00:00 GMT

.NET 11 Preview 3 teaches RyuJIT to eliminate redundant bounds checks on consecutive index-from-end access and on i + constant < length patterns, cutting branch pressure in tight loops.

RegexOptions.AnyNewLine lands in .NET 11 Preview 3: Unicode-aware anchors without the \r? hacks

Sun, 19 Apr 2026 00:00:00 GMT

.NET 11 Preview 3 adds RegexOptions.AnyNewLine so ^, $, \Z, and . recognize every Unicode newline sequence, including \r\n, NEL, LS, and PS, with \r\n treated as one atomic break.

Aspire 13.2 --isolated: Run Parallel AppHost Instances Without Port Collisions

Sat, 18 Apr 2026 00:00:00 GMT

Aspire 13.2 ships an --isolated flag that gives each aspire run its own random ports and secrets store. It unblocks multi-checkout work, agent worktrees, and integration tests that need a live AppHost.

.NET 11 Preview 3: dotnet run -e sets environment variables without launch profiles

Sat, 18 Apr 2026 00:00:00 GMT

dotnet run -e in .NET 11 Preview 3 passes environment variables straight from the CLI and surfaces them as MSBuild RuntimeEnvironmentVariable items.

dotnet sln finally edits solution filters from the CLI in .NET 11 Preview 3

Sat, 18 Apr 2026 00:00:00 GMT

.NET 11 Preview 3 teaches dotnet sln to create, add, remove, and list projects in .slnf solution filters, so large mono-repos can load a subset without opening Visual Studio.

dotnet watch in .NET 11 Preview 3: Aspire hosts, crash recovery, and saner Ctrl+C

Sat, 18 Apr 2026 00:00:00 GMT

dotnet watch gains Aspire app host integration, automatic relaunch after crashes, and fixed Ctrl+C handling for Windows desktop apps in .NET 11 Preview 3.

EF Core 11 Prunes Unnecessary Reference Joins in Split Queries

Sat, 18 Apr 2026 00:00:00 GMT

EF Core 11 Preview 3 removes redundant to-one joins from split queries and drops unneeded ORDER BY keys. One reported scenario got 29% faster, another 22%. Here is what the SQL now looks like.

System.Text.Json in .NET 11 Preview 3 adds PascalCase and per-member naming policies

Sat, 18 Apr 2026 00:00:00 GMT

.NET 11 Preview 3 finishes the naming-policy story in System.Text.Json: JsonNamingPolicy.PascalCase, a member-level [JsonNamingPolicy] attribute, and a type-level [JsonIgnore] default for cleaner DTOs.

Blazor Virtualize Finally Handles Variable-Height Items in .NET 11

Thu, 16 Apr 2026 00:00:00 GMT

ASP.NET Core in .NET 11 Preview 3 teaches the Virtualize component to measure items at runtime, fixing the spacing and scroll jitter that uniform-height assumptions caused.

Pin Clustering Lands in .NET MAUI 11 Maps

Thu, 16 Apr 2026 00:00:00 GMT

.NET MAUI 11 Preview 3 adds built-in pin clustering to the Map control on Android and iOS, with ClusteringIdentifier groups and a ClusterClicked event.

EF Core 11 Adds GetEntriesForState to Skip DetectChanges

Thu, 16 Apr 2026 00:00:00 GMT

EF Core 11 Preview 3 introduces ChangeTracker.GetEntriesForState, a state-filtered enumerator that avoids an extra DetectChanges pass in hot paths like SaveChanges interceptors and audit hooks.

.NET MAUI 11 Ships a Built-in LongPressGestureRecognizer

Thu, 16 Apr 2026 00:00:00 GMT

.NET MAUI 11 Preview 3 adds LongPressGestureRecognizer as a first-party gesture, with duration, movement threshold, state events, and command binding, replacing the common Community Toolkit behavior.

Building a Microsecond-Latency Database Engine in C#

Tue, 14 Apr 2026 00:00:00 GMT

Loic Baumann's Typhon project targets 1-2 microsecond ACID commits using ref structs, hardware intrinsics, and pinned memory, proving C# can compete at the systems programming level.

C# 14 user-defined compound assignment operators: in-place += without the extra allocation

Tue, 14 Apr 2026 00:00:00 GMT

C# 14 lets you overload +=, -=, *=, and friends as void instance methods that mutate the receiver in place, cutting allocations for large value holders like BigInteger-style buffers and tensors.

How Dapper's Default nvarchar Parameters Silently Kill Your SQL Server Indexes

Tue, 14 Apr 2026 00:00:00 GMT

C# strings sent through Dapper default to nvarchar(4000), forcing SQL Server into implicit conversions and full index scans. Here's how to fix it with DbType.AnsiString.

EF Core 11 turns on Cosmos DB transactional batches by default

Tue, 14 Apr 2026 00:00:00 GMT

EF Core 11 groups Cosmos DB writes into transactional batches per container and partition on every SaveChanges, giving best-effort atomicity and fewer roundtrips without any code changes.

GitHub Copilot Modernization: The Assessment Report Is the Actual Product

Tue, 14 Apr 2026 00:00:00 GMT

GitHub Copilot Modernization is pitched as an Assess, Plan, Execute loop for migrating legacy .NET apps. The assessment phase is where the value lives: an inventory report, categorized blockers, and file-level remediation guidance you can diff like code.

Hot Reload Auto-Restart in Visual Studio 2026: Rude Edits Stop Killing Your Debug Session

Tue, 14 Apr 2026 00:00:00 GMT

Visual Studio 2026 adds HotReloadAutoRestart, a project-level opt-in that restarts the app when a rude edit would otherwise end the debug session. It is especially useful for Razor and Aspire projects.

Blazor SSR Finally Gets TempData in .NET 11

Mon, 13 Apr 2026 00:00:00 GMT

ASP.NET Core in .NET 11 Preview 2 brings TempData to Blazor static server-side rendering, enabling flash messages and Post-Redirect-Get flows without workarounds.

C# 15 Collection Expression Arguments: Pass Constructors Inline with with(...)

Mon, 13 Apr 2026 00:00:00 GMT

C# 15 adds the with(...) element to collection expressions, letting you pass capacity, comparers, and other constructor arguments directly in the initializer.

.NET 11 Adds Native Zstandard Compression to System.IO.Compression

Mon, 13 Apr 2026 00:00:00 GMT

.NET 11 Preview 1 ships ZstandardStream, ZstandardEncoder, and ZstandardDecoder in System.IO.Compression, giving you fast, inbox zstd support with no third-party packages.

EF Core 11 Lets You Create and Apply a Migration in One Command

Mon, 13 Apr 2026 00:00:00 GMT

The dotnet ef database update command now accepts --add to scaffold and apply a migration in a single step. Here is how it works, why it matters for containers and .NET Aspire, and what to watch for.

EF Core 11 Adds Native SQL Server Vector Search with DiskANN Indexes

Mon, 13 Apr 2026 00:00:00 GMT

EF Core 11 Preview 2 supports SQL Server 2025 VECTOR_SEARCH() and DiskANN vector indexes directly from LINQ. Here is how to set up the index, run approximate queries, and what changes from the EF Core 10 VectorDistance approach.

Fluorite: Toyota Built a Console-Grade Game Engine on Flutter and Dart

Mon, 13 Apr 2026 00:00:00 GMT

Fluorite is an open-source 3D game engine that embeds Google Filament rendering inside Flutter widgets and lets you write game logic in Dart.

Rider 2026.1 Ships an ASM Viewer for JIT, ReadyToRun, and NativeAOT Output

Mon, 13 Apr 2026 00:00:00 GMT

Rider 2026.1 adds a .NET Disassembler plugin that lets you inspect machine code generated by the JIT, ReadyToRun, and NativeAOT compilers without leaving the IDE.

ASP.NET Core 11 Ships Native OpenTelemetry Tracing: Drop the Extra NuGet Package

Sun, 12 Apr 2026 00:00:00 GMT

ASP.NET Core in .NET 11 Preview 2 adds OpenTelemetry semantic attributes directly to HTTP server activity, removing the need for OpenTelemetry.Instrumentation.AspNetCore.

ReSharper Lands in VS Code and Cursor, Free for Non-Commercial Use

Sun, 12 Apr 2026 00:00:00 GMT

JetBrains shipped ReSharper as a VS Code extension with full C# analysis, refactoring, and unit testing. It works in Cursor and Google Antigravity too, and costs nothing for OSS and learning.

C# 15 Union Types Are Here: Type Unions Ship in .NET 11 Preview 2

Wed, 08 Apr 2026 00:00:00 GMT

C# 15 introduces the union keyword for type unions with exhaustive pattern matching and implicit conversions. Available now in .NET 11 Preview 2.

Kestrel Drops Exceptions from Its HTTP/1.1 Parser in .NET 11

Wed, 08 Apr 2026 00:00:00 GMT

Kestrel's HTTP/1.1 request parser in .NET 11 replaces BadHttpRequestException with a result struct, cutting malformed-request overhead by up to 40%.

Microsoft Agent Framework 1.0: Building AI Agents in Pure C#

Tue, 07 Apr 2026 00:00:00 GMT

Microsoft Agent Framework hits 1.0 with stable APIs, multi-provider connectors, multi-agent orchestration, and A2A/MCP interop. Here is what it looks like in practice on .NET 10.

.NET 11 Runtime Async Replaces State Machines with Cleaner Stack Traces

Mon, 06 Apr 2026 00:00:00 GMT

Runtime Async in .NET 11 moves async/await handling from compiler-generated state machines into the runtime itself, producing readable stack traces, correct breakpoints, and fewer heap allocations.

dotnet new webworker: first-class Web Workers for Blazor in .NET 11 Preview 2

Sun, 05 Apr 2026 00:00:00 GMT

A new project template in .NET 11 Preview 2 scaffolds the JS plumbing, WebWorkerClient, and JSExport boilerplate needed to run .NET code in a browser Web Worker.

What 878 Copilot Coding Agent PRs in dotnet/runtime Actually Look Like

Sun, 29 Mar 2026 00:00:00 GMT

The .NET team shares ten months of real data on running GitHub's Copilot Coding Agent in dotnet/runtime: 878 PRs, a 67.9% merge rate, and clear lessons on where AI-assisted development helps and where it still falls short.

Generative AI for Beginners .NET v2: Rebuilt for .NET 10 with Microsoft.Extensions.AI

Sun, 29 Mar 2026 00:00:00 GMT

Microsoft's free generative AI course for .NET developers ships Version 2, rebuilt for .NET 10 and migrated from Semantic Kernel to Microsoft.Extensions.AI's IChatClient pattern.

C# 14 Extension Members: Extension Properties, Operators, and Static Extensions

Sun, 08 Feb 2026 00:00:00 GMT

C# 14 introduces extension members, allowing you to add extension properties, operators, and static members to existing types using the new extension keyword.

C# 14 Null-Conditional Assignment: Using ?. and ?[] on the Left Side

Sun, 08 Feb 2026 00:00:00 GMT

C# 14 extends null-conditional operators to work on the left-hand side of assignments, eliminating verbose null checks when setting properties or indexers.

.NET 10 Post-Quantum Cryptography: ML-KEM, ML-DSA, and SLH-DSA

Sun, 08 Feb 2026 00:00:00 GMT

.NET 10 adds native support for post-quantum cryptography algorithms ML-KEM, ML-DSA, and SLH-DSA, preparing your applications for a quantum-resistant future.

C# 14 idea: interceptors could make System.Text.Json source generation feel automatic

Sun, 08 Feb 2026 00:00:00 GMT

A community discussion proposed using C# 14 interceptors to rewrite JsonSerializer calls so they automatically use a generated JsonSerializerContext, keeping AOT-friendly source generation with cleaner call sites.

Polars.NET: a Rust DataFrame engine for .NET 10 that leans on LibraryImport

Sun, 08 Feb 2026 00:00:00 GMT

A new Polars.NET project is trending after a Feb 6, 2026 community post. The headline is simple: a .NET-friendly DataFrame API backed by Rust Polars, with a stable C ABI and LibraryImport-based interop to keep overhead low.

Flutter: Droido 1.2.0 is a debug-only network inspector with zero release impact

Sun, 08 Feb 2026 00:00:00 GMT

Droido 1.2.0 landed on Feb 8, 2026 as a debug-only network inspector for Flutter. The interesting part is not the UI. It is the packaging story: keep a modern inspector in debug builds while ensuring release builds remain clean, small, and unaffected.

biometric_signature 10.0.0: `simplePrompt()` is the feature, new `BiometricError` values are the real breaking change (Flutter 3.x)

Sat, 07 Feb 2026 00:00:00 GMT

biometric_signature 10.0.0 adds simplePrompt() and new BiometricError values. Here is how to handle the breaking change and future-proof your Flutter 3.x auth flows.

.NET Framework 3.5 Goes Standalone on New Windows Builds: What Breaks

Sat, 07 Feb 2026 00:00:00 GMT

Starting with Windows 11 Build 27965, .NET Framework 3.5 is no longer an optional Windows component. Here is what breaks in CI, provisioning, and golden images, and how to fix it.

TrailBase v0.23.7: A Single-Binary Firebase Alternative for .NET 10 and Flutter

Sat, 07 Feb 2026 00:00:00 GMT

TrailBase is an open-source, single-executable backend built on Rust, SQLite, and Wasmtime. Version 0.23.7 ships UI fixes and improved error handling.

Debugging Flutter iOS from Windows: a real device workflow (Flutter 3.x)

Fri, 23 Jan 2026 00:00:00 GMT

A pragmatic workflow for debugging Flutter iOS apps from Windows: offload the build to macOS in GitHub Actions, install the IPA on a real iPhone, and use flutter attach for hot reload and DevTools.

Flutter Particles 2.0.2: a quick tour (and a tiny integration snippet) on Flutter 3.x

Fri, 23 Jan 2026 00:00:00 GMT

particles_flutter 2.0.2 adds particle shapes, rotation, boundary modes, and emitters. A quick tour of what changed and a tiny integration snippet for Flutter 3.x projects.

NuGet “become owner” request spam: what to do (and what to lock down) in .NET 9/.NET 10

Fri, 23 Jan 2026 00:00:00 GMT

Defend your .NET packages against NuGet ownership request spam. Lock files, Package Source Mapping, and Central Package Management practices for .NET 9 and .NET 10.

Scalar in ASP.NET Core: why your Bearer token is ignored (.NET 10)

Fri, 23 Jan 2026 00:00:00 GMT

If your Bearer token works in Postman but not in Scalar, the problem is likely your OpenAPI document. Here is how to declare a proper security scheme in .NET 10.

TreatWarningsAsErrors without sabotaging dev builds (.NET 10)

Fri, 23 Jan 2026 00:00:00 GMT

How to enforce TreatWarningsAsErrors in Release builds and CI while keeping Debug flexible for local development in .NET 10, using Directory.Build.props.

Perfetto + dotnet-trace: a practical profiling loop for .NET 9/.NET 10

Wed, 21 Jan 2026 00:00:00 GMT

A practical profiling loop for .NET 9 and .NET 10: capture traces with dotnet-trace, visualize them in Perfetto, and iterate on CPU, GC, and thread pool issues.

A WinUI 3 “local-only notes” app is the right kind of boring: offline-first, SQLite, keyboard-first

Sun, 18 Jan 2026 00:00:00 GMT

Miyanyedi Quick Note is a WinUI 3 + SQLite note-taking app that is offline-first and privacy-friendly. Here is why local-only is a feature, plus a minimal SQLite snippet for .NET 8 desktop apps.

An open-source WPF SSH manager shows a practical pattern: xterm.js in WebView2, secrets via DPAPI

Sun, 18 Jan 2026 00:00:00 GMT

SshManager is an open-source WPF SSH manager built on .NET 8. It shows a practical pattern: xterm.js inside WebView2 for terminal rendering, EF Core + SQLite for persistence, and DPAPI for local credential protection.

CV Shortlist: an AI-powered .NET 10 SaaS went open-source, and the stack is worth studying

Sun, 18 Jan 2026 00:00:00 GMT

CV Shortlist is an open-source .NET 10 SaaS that pairs Azure Document Intelligence with an OpenAI model. The stack, config discipline, and AI integration boundary are worth studying.

Flutter Text: the `leadingDistribution` detail that changes how your UI “breathes”

Sun, 18 Jan 2026 00:00:00 GMT

The leadingDistribution property in Flutter's TextHeightBehavior controls how extra leading is distributed above and below glyphs. Here is when it matters and how to fix text that looks vertically off.

ModularPipelines V3: write CI pipelines in C#, debug locally, stop babysitting YAML

Sun, 18 Jan 2026 00:00:00 GMT

ModularPipelines V3 lets you write CI pipelines in C# instead of YAML. Run them locally with dotnet run, get compile-time safety, and debug with breakpoints.

TypeMonkey is a good reminder: Flutter desktop apps need architecture first, polish later

Sun, 18 Jan 2026 00:00:00 GMT

TypeMonkey, a Flutter desktop typing app, shows why desktop projects need clean architecture from day one: sealed states, interface boundaries, and testable logic.

Dart 3.12 dev tags are moving fast: How to read them (and what to do) as a Flutter 3.x developer

Sat, 10 Jan 2026 00:00:00 GMT

Dart 3.12 dev tags are landing fast. Here is how to read the version string, pin a dev SDK in CI, and triage failures so your Flutter 3.x migration is a small PR instead of a fire drill.

Deploy a .NET App with Podman + systemd: Stable Restarts, Real Logs, No Magic

Sat, 10 Jan 2026 00:00:00 GMT

Deploy .NET 9 and .NET 10 services on a Linux VM using Podman and systemd. Get stable restarts, real logs via journald, and a containerized app managed like a proper service -- no Kubernetes required.

Flet in 2026: Flutter UI, Python logic, and the trade-offs you need to admit upfront

Sat, 10 Jan 2026 00:00:00 GMT

Flet lets you build Flutter UIs with Python logic. Here are the real trade-offs: latency from event chatter, ecosystem mismatch with Dart plugins, and split-brain debugging -- plus when it actually makes sense.

Flutter 3.x gets a new “offline RAG” building block: `mobile_rag_engine` (Rust core)

Sat, 10 Jan 2026 00:00:00 GMT

mobile_rag_engine brings on-device RAG to Flutter with a Rust core, ONNX embeddings, HNSW vector search, and SQLite storage. A practical look at the API, integration flow, and shipping constraints.

FlutterGuard CLI: A Fast “What Can an Attacker Extract?” Check for Flutter 3.x Apps

Sat, 10 Jan 2026 00:00:00 GMT

FlutterGuard CLI scans your Flutter 3.x build artifacts for leaked secrets, debug symbols, and metadata. A practical workflow for integrating it into CI and handling what it finds.

gRPC in Containers Feels “Hard” in .NET 9 and .NET 10: 4 Traps You Can Fix

Sat, 10 Jan 2026 00:00:00 GMT

Four common traps when hosting gRPC in containers with .NET 9 and .NET 10: HTTP/2 protocol mismatches, TLS termination confusion, broken health checks, and proxy misconfiguration -- with fixes for each.

Microsoft `mcp`: Wiring Model Context Protocol Servers from C# on .NET 10

Sat, 10 Jan 2026 00:00:00 GMT

How to wire Model Context Protocol (MCP) servers in C# on .NET 10 using microsoft/mcp. Covers tool contracts, input validation, auth, observability, and production-readiness patterns.

Monitor Background Jobs in .NET 9 and .NET 10 Without Hangfire: Health + Metrics + Alerts

Sat, 10 Jan 2026 00:00:00 GMT

Monitor BackgroundService jobs in .NET 9 and .NET 10 without Hangfire using heartbeat health checks, duration metrics, and failure alerts with a practical code example.

.NET 10 file-based apps just got multi-file scripts: `#:include` is landing

Sat, 10 Jan 2026 00:00:00 GMT

.NET 10 adds #:include support for file-based apps, letting dotnet run scripts span multiple .cs files without creating a full project.

SBOM for .NET in Docker: stop trying to force one tool to see everything

Sat, 10 Jan 2026 00:00:00 GMT

How to track NuGet dependencies and container OS packages for a .NET Docker image using CycloneDX, Syft, and Dependency-Track -- and why one SBOM is not enough.

System.CommandLine v2, but with the wiring done for you: `Albatross.CommandLine` v8

Sat, 10 Jan 2026 00:00:00 GMT

Albatross.CommandLine v8 builds on System.CommandLine v2 with a source generator, DI integration, and hosting layer to eliminate CLI boilerplate in .NET 9 and .NET 10 apps.

Wave-IDE in 2026: the minimum Roslyn plumbing behind a WinForms IDE on .NET 10

Sat, 10 Jan 2026 00:00:00 GMT

Wave-IDE shows that WinForms and Roslyn on .NET 10 are enough to build a working C# IDE. Here is the minimum plumbing for incremental analysis, completion, and diagnostics.

AWS Lambda Supports .NET 10: What to Verify Before You Flip the Runtime

Thu, 08 Jan 2026 00:00:00 GMT

AWS Lambda now supports .NET 10, but the runtime upgrade is not the hard part. Here is a practical checklist covering cold starts, trimming, native AOT, and deployment shape.

Flutter 3.38.6 and the `engine.version` Bump: Reproducible Builds Get Easier (If You Pin It)

Thu, 08 Jan 2026 00:00:00 GMT

Flutter 3.38.6 bumped engine.version, and that matters for reproducible builds. Learn how to pin the SDK in CI, avoid engine drift, and diagnose 'what changed' when builds break with no code changes.

Flutter 3.x routing: tp_router tries to delete your route table (and it’s a compelling idea)

Thu, 08 Jan 2026 00:00:00 GMT

tp_router is a generator-driven Flutter router that eliminates manual route tables. Annotate your pages, run build_runner, and navigate with typed APIs instead of stringly-typed paths.

.NET 10 made your NIC list explode? Filtering GetAllNetworkInterfaces() without lying to yourself

Thu, 08 Jan 2026 00:00:00 GMT

How to filter GetAllNetworkInterfaces() in .NET 10 when virtual adapters from Hyper-V, Docker, WSL, and VPNs flood the list. Includes a two-stage filter with explicit tradeoffs.

Queryable Encryption + Vector Search in the MongoDB EF Core Provider (and why it matters for .NET 9 and .NET 10)

Thu, 08 Jan 2026 00:00:00 GMT

The MongoDB EF Core provider now supports Queryable Encryption and vector search. Here is what that means for .NET 9 and .NET 10 apps that already use EF Core.

SwitchMediator v3: A Zero-Alloc Mediator That Stays Friendly to AOT

Thu, 08 Jan 2026 00:00:00 GMT

SwitchMediator v3 targets zero-allocation, AOT-friendly dispatch for .NET 9 and .NET 10 CQRS services. Here is what that means and how to benchmark your own mediator.

.NET 10 Performance: SearchValues

Sun, 04 Jan 2026 00:00:00 GMT

Use SearchValues in .NET 10 for high-performance multi-string searching. Replaces foreach loops with SIMD-accelerated matching using Aho-Corasick and Teddy algorithms.

Streaming Tasks with .NET 9 Task.WhenEach

Sun, 04 Jan 2026 00:00:00 GMT

.NET 9 introduces Task.WhenEach, which returns an IAsyncEnumerable of tasks as they complete. Here is how it simplifies processing parallel results as they arrive.

C# 13: The End of `params` Allocations

Fri, 02 Jan 2026 00:00:00 GMT

C# 13 finally eliminates the hidden array allocation behind params. You can now use params with Span, ReadOnlySpan, List, and other collection types for zero-allocation variadic methods.

C# Proposal: Discriminated Unions

Fri, 02 Jan 2026 00:00:00 GMT

A look at the C# discriminated unions proposal: the union keyword, exhaustive pattern matching, and how it could replace OneOf libraries and class hierarchies.

.NET 9: The End of lock(object)

Fri, 02 Jan 2026 00:00:00 GMT

.NET 9 introduces System.Threading.Lock, a dedicated lightweight synchronization primitive that replaces lock(object) with better performance and clearer intent.

Optimizing Frequency Counting with LINQ CountBy

Thu, 01 Jan 2026 00:00:00 GMT

Replace GroupBy with CountBy in .NET 9 for cleaner, more efficient frequency counting. Reduces allocations from O(N) to O(K) by skipping intermediate grouping structures.

.NET 10: Stack allocation of arrays of value types

Sat, 12 Apr 2025 00:00:00 GMT

In .NET 10, the JIT can stack-allocate small fixed-size arrays of value types, eliminating heap allocations and delivering up to 60% faster performance compared to .NET 9.

What’s new in .NET MAUI 10

Fri, 11 Apr 2025 00:00:00 GMT

A summary of new features, improvements, and breaking changes in .NET MAUI 10, released with .NET 10 and C# 14 in November 2025.

How to change SearchBar’s icon color in .NET MAUI

Thu, 10 Apr 2025 00:00:00 GMT

How to change the SearchBar icon color in .NET MAUI using the new SearchIconColor property introduced in .NET 10.

C# 14: Simplified parameters with modifiers in lambdas

Wed, 09 Apr 2025 00:00:00 GMT

C# 14 allows using ref, out, in, scoped, and ref readonly modifiers on implicitly typed lambda parameters, eliminating the need to explicitly declare parameter types.

Partial constructors and events in C# 14

Tue, 08 Apr 2025 00:00:00 GMT

C# 14 lets you declare instance constructors and events as partial members, splitting definitions across files for cleaner code generation and separation of concerns.

C# 14: nameof support for unbound generic types

Mon, 07 Apr 2025 00:00:00 GMT

C# 14 enhances the nameof expression to support unbound generic types like List<> and Dictionary<,>, eliminating the need for placeholder type arguments.

Implicit Span conversions in C# 14 – First-class support for Span and ReadOnlySpan

Sun, 06 Apr 2025 00:00:00 GMT

C# 14 adds built-in implicit conversions between Span, ReadOnlySpan, arrays, and strings, enabling cleaner APIs, better type inference, and fewer manual AsSpan() calls.

.NET 10: Array Enumeration Performance Improvements (JIT Array De-Abstraction)

Sun, 06 Apr 2025 00:00:00 GMT

In .NET 10, the JIT compiler reduces the overhead of iterating arrays through interfaces. See benchmarks comparing .NET 9 vs .NET 10 with foreach, IEnumerable, and conditional escape analysis.

C# 14 – The field keyword and field-backed properties

Sat, 05 Apr 2025 00:00:00 GMT

C# 14 introduces the field contextual keyword for property accessors, letting you add custom logic to auto-properties without declaring a separate backing field.

.NET Performance: ToList vs ToArray

Mon, 06 Jan 2025 00:00:00 GMT

.NET 9 significantly improves ToArray performance using InlineArray, making it faster and more memory-efficient than ToList. See benchmarks comparing .NET 8 vs .NET 9.

C# 13: Use params collections with any recognized collection type

Thu, 02 Jan 2025 00:00:00 GMT

C# 13 extends the params modifier beyond arrays to support Span, ReadOnlySpan, IEnumerable, and other collection types, reducing boilerplate and improving flexibility.

How to switch to C# 13

Wed, 01 Jan 2025 00:00:00 GMT

How to fix 'Feature is not available in C# 12.0' and switch your project to C# 13 by changing the target framework or setting LangVersion in your .csproj file.

What’s new in C# 14.0

Sun, 01 Dec 2024 00:00:00 GMT

A summary of all new features in C# 14.0, including the field keyword, extension members, null-conditional assignment, implicit span conversions, and more.

C# language version history

Sun, 01 Dec 2024 00:00:00 GMT

The evolution of C# has transformed it into a modern, high-performance language. This guide tracks every major milestone. The Early Years (C# 1.0 – 1.2) C# launched in 2002 as a primary language for the .NET Framework. It felt like Java but with a focus on Windows development. Version 1.2 arrived shortly after with small…

What’s new in .NET 10

Sun, 01 Dec 2024 00:00:00 GMT

What's new in .NET 10: LTS release with 3 years of support, new JIT optimizations, array devirtualization, stack allocation improvements, and more.

.NET 8 ToFrozenDictionary: Dictionary vs FrozenDictionary

Sat, 27 Apr 2024 00:00:00 GMT

Convert a Dictionary to a FrozenDictionary with `ToFrozenDictionary()` in .NET 8 for faster reads. Benchmark, when to use it, and the build-time tradeoff.

Python: Detect text language using Azure AI Language service

Sat, 18 Nov 2023 00:00:00 GMT

Learn how to detect text language using the Azure AI Language service and the azure-ai-textanalytics Python SDK, with code samples and API payload examples.

How to: Add AdMob to your MAUI app

Fri, 17 Nov 2023 00:00:00 GMT

Learn how to display AdMob banner ads in your .NET MAUI app on both Android and iOS, with step-by-step setup and platform-specific handler implementations.

How to: Detect text language using Azure AI Language service

Thu, 16 Nov 2023 00:00:00 GMT

Learn how to detect text language using the Azure AI Language service, including provisioning, API payloads, and C# SDK examples with TextAnalyticsClient.

Getting started with .NET Aspire

Wed, 15 Nov 2023 00:00:00 GMT

A step-by-step guide to building your first .NET Aspire application, covering project structure, service discovery, and the Aspire dashboard.

How to install .NET Aspire (dotnet workload install aspire)

Wed, 15 Nov 2023 00:00:00 GMT

Install .NET Aspire via `dotnet workload install aspire`. Step-by-step setup of .NET 8, the Aspire workload, and Docker on Windows, macOS, Linux.

What is .NET Aspire?

Tue, 14 Nov 2023 00:00:00 GMT

An overview of .NET Aspire, the cloud-oriented framework for building scalable distributed applications, covering orchestration, components, and tooling.

Converting Megabytes to Kilobytes Made Simple

Mon, 13 Nov 2023 00:00:00 GMT

Learn how to convert megabytes (MB) to kilobytes (KB) using the simple formula of multiplying by 1,024. Includes practical examples and tips for managing digital storage.

C# Randomly choose items from a list

Sun, 12 Nov 2023 00:00:00 GMT

In C#, you can randomly select items from a list using Random.GetItems, a method introduced in .NET 8. Learn how it works with practical examples.

How to publish container as tar.gz in .NET

Sat, 11 Nov 2023 00:00:00 GMT

Learn how to publish a .NET 8 container as a tar.gz archive using the ContainerArchiveOutputPath property with dotnet publish.

MAUI: How to register handlers in a library

Fri, 10 Nov 2023 00:00:00 GMT

Learn how to register view handlers and services from within a .NET MAUI library using the builder pattern and MauiAppBuilder extension methods.

How to fix: ‘Point’ does not have a predefined size, therefore sizeof can only be used in an unsafe context

Thu, 09 Nov 2023 00:00:00 GMT

Fix the C# error where sizeof cannot be used with Point outside an unsafe context. Two solutions: enabling unsafe code or using Marshal.SizeOf instead.

C# Access private property backing field using Unsafe Accessor

Wed, 08 Nov 2023 00:00:00 GMT

Use UnsafeAccessorAttribute in .NET 8 to access auto-generated backing fields of private auto-properties in C# without reflection.

How to create a 2 column Flexbox layout in React Native

Tue, 07 Nov 2023 00:00:00 GMT

Learn how to create a 2 column Flexbox layout in React Native using flex-wrap, with adjustable column counts and spacing between elements.

C# ZIP files to Stream

Mon, 06 Nov 2023 00:00:00 GMT

.NET 8 includes new CreateFromDirectory and ExtractToDirectory overloads that let you create and extract ZIP files directly to and from a Stream, without writing to disk.

.NET 8 performance: 10x faster GetGenericTypeDefinition

Sun, 05 Nov 2023 00:00:00 GMT

Benchmarking GetGenericTypeDefinition in .NET 8 vs .NET 7 shows nearly 10x faster performance. See benchmark code and results using BenchmarkDotNet.

How to take a screenshot in .NET core

Sat, 04 Nov 2023 00:00:00 GMT

Learn how to capture a screenshot of your entire desktop from a .NET console application using System.Windows.Forms. Windows-only solution covering all displays.

Kebab case – everything about it and more

Fri, 03 Nov 2023 00:00:00 GMT

Kebab case is a naming convention used in programming to format variable, function, or file names by separating words with hyphens (“-“). It is also known as “kebab-case”, “hyphen-case”, or “spinal-case”. For example, if you have a variable representing a person’s first name, you would write it in kebab case as: In kebab case, all…

C# How to update a readonly field using UnsafeAccessor

Thu, 02 Nov 2023 00:00:00 GMT

Learn how to update a readonly field in C# using UnsafeAccessor, an alternative to reflection without the performance penalty. Available in .NET 8.

.NET 8 Performance: UnsafeAccessor vs. Reflection

Wed, 01 Nov 2023 00:00:00 GMT

Benchmarking UnsafeAccessor vs Reflection in .NET 8. See how UnsafeAccessor achieves zero-overhead performance compared to traditional reflection.

C# UnsafeAccessor: private members without reflection (.NET 8)

Tue, 31 Oct 2023 00:00:00 GMT

Use the `[UnsafeAccessor]` attribute in .NET 8 to read private fields and call private methods at zero overhead — no reflection, fully AOT-compatible.

How to fix: MissingPluginException – No implementation found for method getAll

Mon, 30 Oct 2023 00:00:00 GMT

Fix Flutter `MissingPluginException` 'No implementation found for method getAll' on shared_preferences and similar plugins (package_info_plus, etc.) — ProGuard, plugin registration, minSdkVersion, hot restart fixes.

C# – How to mark features as experimental

Sun, 29 Oct 2023 00:00:00 GMT

Starting with C# 12, a new ExperimentalAttribute lets you mark types, methods, properties, or assemblies as experimental. Learn how to use it with diagnosticId, pragma tags, and UrlFormat.

C# – ref readonly parameters

Sat, 28 Oct 2023 00:00:00 GMT

The ref readonly modifier in C# provides a more transparent way of passing read-only references. Learn how it improves on the in modifier with better constraints and caller visibility.

What comes after decillion?

Fri, 27 Oct 2023 00:00:00 GMT

What comes after decillion? The answer is undecillion, with 36 zeroes. See the full list of large numbers from million to centillion.

C# – How to shuffle an array?

Thu, 26 Oct 2023 00:00:00 GMT

The easiest way to shuffle an array in C# is using Random.Shuffle, introduced in .NET 8. It works in-place on both arrays and spans.

System.Text.Json – How to modify existing type info resolver

Wed, 25 Oct 2023 00:00:00 GMT

Use the new WithAddedModifier extension method in .NET 8 to easily modify any IJsonTypeInfoResolver serialization contract without creating a new resolver from scratch.

HttpClient get JSON as AsyncEnumerable

Tue, 24 Oct 2023 00:00:00 GMT

The new GetFromJsonAsAsyncEnumerable extension method in .NET 8 deserializes HTTP response JSON into an IAsyncEnumerable. Learn how to use it with await foreach.

JsonNode – .NET 8 API updates

Mon, 23 Oct 2023 00:00:00 GMT

Explore the new .NET 8 API additions to JsonNode and JsonArray, including GetValueKind, GetPropertyName, GetElementIndex, ReplaceWith, and ParseAsync.

Deep cloning and deep equality of a JsonNode

Sun, 22 Oct 2023 00:00:00 GMT

Learn how to use the new DeepClone() and DeepEquals() methods on JsonNode in .NET 8 for deep cloning and comparing JSON nodes.

System.Text.Json – Disable reflection-based serialization

Sat, 21 Oct 2023 00:00:00 GMT

Learn how to disable reflection-based serialization in System.Text.Json starting with .NET 8 for trimmed and native AOT applications using the JsonSerializerIsReflectionEnabledByDefault property.

C# – What is a NullReferenceException, and how to fix it?

Fri, 20 Oct 2023 00:00:00 GMT

Learn what causes a NullReferenceException in C#, how to debug it, and how to prevent it using null checks, the null-conditional operator, and nullable reference types.

YouTube: Missing option to delete channel

Fri, 20 Oct 2023 00:00:00 GMT

Missing the Remove YouTube Content option? Use YouTube Studio as a workaround to delete your channel when the standard option is unavailable.

Add/Remove TypeInfoResolver to existing JsonSerializerOptions

Thu, 19 Oct 2023 00:00:00 GMT

Learn how to add or remove TypeInfoResolver instances on existing JsonSerializerOptions using the new TypeInfoResolverChain property in .NET 8.

WPF – Prevent file dialog selection from being added to recents

Wed, 18 Oct 2023 00:00:00 GMT

Prevent WPF file dialog selections from appearing in Windows Explorer recents and the Start Menu by setting AddToRecent to false in .NET 8.

WPF – Individual dialog states using ClientGuid

Fri, 13 Oct 2023 00:00:00 GMT

Use the ClientGuid property in .NET 8 to persist individual dialog states like window size, position, and last used folder across WPF file dialogs.

C# 12 – Interceptors

Thu, 12 Oct 2023 00:00:00 GMT

Learn about C# 12 interceptors, an experimental .NET 8 compiler feature that lets you replace method calls at compile time using the InterceptsLocation attribute.

WPF – Limit OpenFileDialog folder tree to a certain folder

Thu, 12 Oct 2023 00:00:00 GMT

Learn how to constrain the WPF OpenFileDialog folder tree to a specific root folder using the RootDirectory property in .NET 8.

Flutter – NoSuchMethod: the method was called on null

Mon, 09 Oct 2023 00:00:00 GMT

This Flutter error occurs when calling a method on a null object reference. Learn how to diagnose and fix the NoSuchMethod error using the call stack and breakpoints.

WPF hardware acceleration in RDP

Mon, 09 Oct 2023 00:00:00 GMT

Learn how to enable WPF hardware acceleration over RDP in .NET 8 for improved performance and a more responsive remote desktop experience.

WPF Open / Select Folder Dialog (.NET 8 OpenFolderDialog)

Mon, 09 Oct 2023 00:00:00 GMT

Use the new .NET 8 `OpenFolderDialog` in WPF to let users open and select one or multiple folders. Replaces the old WinForms FolderBrowserDialog hack.

The AI revolution – Should software engineers be afraid for their jobs?

Sun, 08 Oct 2023 00:00:00 GMT

Will AI replace software engineers? Exploring the reality behind AI-generated websites, prompt engineering, specialized AI, and why AI is a copilot rather than a replacement.

Implementation type Data.AppDbContext can’t be converted to service type Microsoft.AspNetCore.Identity.IUserStore

Thu, 28 Sep 2023 00:00:00 GMT

Fix the ASP.NET Core Identity error where AppDbContext can't be converted to IUserStore by adding AddEntityFrameworkStores to your identity configuration.

.NET 8 – Serializing properties from interface hierarchies

Mon, 25 Sep 2023 00:00:00 GMT

.NET 8 adds support for serializing properties from interface hierarchies, including all properties from all interfaces depending on the declared variable type.

.NET 8 – Deserialize into non-public properties

Thu, 21 Sep 2023 00:00:00 GMT

Learn how to deserialize JSON into non-public properties in .NET 8 using the JsonInclude attribute and parameterized constructors.

.NET 8 – How to use JsonStringEnumConverter with native AOT

Sun, 17 Sep 2023 00:00:00 GMT

Learn how to use the new JsonStringEnumConverter in .NET 8 for native AOT-compatible enum serialization with System.Text.Json.

The type or namespace name InterceptsLocationAttribute could not be found

Thu, 14 Sep 2023 00:00:00 GMT

How to fix error CS0246 for InterceptsLocationAttribute in C# interceptors by defining the attribute yourself.

.NET 8 – Mark JsonSerializerOptions as readonly

Mon, 11 Sep 2023 00:00:00 GMT

Learn how to mark JsonSerializerOptions instances as read-only in .NET 8 using MakeReadOnly, and how to check the IsReadOnly property.

.NET 8 – Serialization of Half, Int128, and UInt128

Thu, 07 Sep 2023 00:00:00 GMT

System.Text.Json in .NET 8 adds built-in serialization support for the Half, Int128, and UInt128 numeric types.

.NET 8 – Memory is serialized as base64

Wed, 06 Sep 2023 00:00:00 GMT

Starting with .NET 8, both Memory and ReadOnlyMemory are serialized as Base64 strings, while other types like Memory remain JSON arrays.

.NET 8 – Include non-public members in JSON serialization

Tue, 05 Sep 2023 00:00:00 GMT

Learn how to include private, protected, and internal properties in JSON serialization in .NET 8 using the JsonInclude attribute.

dotnet workload clean

Mon, 04 Sep 2023 00:00:00 GMT

Use the `dotnet workload clean` command to remove leftover .NET workload packs after an SDK or Visual Studio update — when to use it, what it removes, and gotchas.

.NET 8 – Deserialize into read-only properties

Sun, 03 Sep 2023 00:00:00 GMT

Learn how to deserialize JSON into read-only properties without a setter in .NET 8 using JsonObjectCreationHandling or JsonSerializerOptions.

.NET 8 – Handle missing members during JSON deserialization

Sat, 02 Sep 2023 00:00:00 GMT

Learn how to throw exceptions for unmapped JSON properties during deserialization in .NET 8 using JsonUnmappedMemberHandling.

SQLite-net – No parameterless constructor defined for this object on ExecuteQuery

Fri, 01 Sep 2023 00:00:00 GMT

How to fix the 'no parameterless constructor defined' error in SQLite-net when using ExecuteQuery with primitive types like string or int.

C# 12 – Inline arrays

Thu, 31 Aug 2023 00:00:00 GMT

Inline arrays enable you to create an array of fixed size in a struct type. Such a struct, with an inline buffer, should provide performance comparable to an unsafe fixed size buffer. Inline arrays are mostly to be used by the runtime team and some library authors to improve performance in certain scenarios. You likely…

C# 12 – Collection expressions

Wed, 30 Aug 2023 00:00:00 GMT

C# 12 introduces a new simplified syntax for creating arrays. It looks like this: It’s important to note that the array type needs to be specified explicitly, so you cannot use var for declaring the variable. Similarly, if you wanted to create a Span, you can do: Multi-dimensional arrays The advantages of this terse syntax…

How to install dotnet script

Tue, 29 Aug 2023 00:00:00 GMT

dotnet script enables you to run C# scripts (.CSX) from the .NET CLI. The only requirement is to have .NET 6 or newer installed on your machine. You can use the following command to install dotnet-script globally: Then to execute a script file you simply call dotnet script like in the example below: How…

Flutter – Fix The getter ‘accentColor’ isn’t defined for the class ‘ThemeData’

Fri, 18 Aug 2023 00:00:00 GMT

The most likely cause of this error is an update to Flutter (flutter upgrade) which led to some incompatibility with your existing code or your project's dependencies. The Theme.of(context).accentColor property has been deprecated since Flutter 1.17 and is entirely removed from the current version, thus the error you are seeing. What to use instead Or, if…

Flutter: Your project requires a newer version of the Kotlin Gradle plugin

Fri, 18 Aug 2023 00:00:00 GMT

Fix the Flutter error 'Your project requires a newer version of the Kotlin Gradle plugin' by updating the ext.kotlin_version in your build.gradle file to the latest Kotlin release.

C# How to wait for a process to end?

Fri, 11 Aug 2023 00:00:00 GMT

You can use the WaitForExit method to wait for the process to complete. Your code will wait synchronously for the process to finish, then it will resume execution. Let’s look at an example: The code above will start a new cmd.exe process, and execute the timeout 5 command. The process.WaitForExit() call will force your program…

What does megabyte mean?

Tue, 08 Aug 2023 00:00:00 GMT

A megabyte (MB) equals one million bytes in the SI system, but can also mean 1,048,576 bytes in computing. Learn about the different definitions and conventions.

What comes after quadrillion?

Mon, 07 Aug 2023 00:00:00 GMT

After quadrillion comes quintillion, with 18 zeroes. Discover the full list of large number names from million all the way to centillion.

C# 12 – Alias any type

Sun, 06 Aug 2023 00:00:00 GMT

The using alias directive has been relaxed in C# 12 to allow aliasing any sort of type, not just named types. This means that you can now alias tuples, pointers, array types, generic types, etc. So instead of using the full structural form of a tuple, you can now alias it with a short descriptive…

.NET 8 JsonNamingPolicy: SnakeCaseLower and KebabCaseLower (System.Text.Json)

Sun, 06 Aug 2023 00:00:00 GMT

Use the new .NET 8 `JsonNamingPolicy.SnakeCaseLower` (and SnakeCaseUpper, KebabCaseLower, KebabCaseUpper) to serialize snake_case / kebab-case JSON via System.Text.Json — no custom converter needed.

Is there a C# With…End With statement equivalent?

Sat, 05 Aug 2023 00:00:00 GMT

The With…End With statement in VB allows you to execute a series of statements that repeatedly refer to a single object. Thus the statements can use a simplified syntax for accessing members of the object. For example: Is there a C# syntax equivalent? No. There is not. The closest thing to it would be the…

C# 12 – Primary constructors

Sun, 30 Jul 2023 00:00:00 GMT

Starting from C# 12, it is possible to define a primary constructor within classes and structs. The parameters are placed in parentheses right after the type name. The parameters of a primary constructor have a broad scope. They can be utilized to initialize properties or fields, serve as variables in methods or local functions, and…

dotnet new api -aot: ‘-aot’ is not a valid option

Wed, 14 Jun 2023 00:00:00 GMT

Fix the '-aot is not a valid option' error by using the correct double-hyphen syntax: dotnet new api --aot.

The type or namespace name ‘QueryOption’ could not be found

Tue, 13 Jun 2023 00:00:00 GMT

Starting with Microsoft Graph .NET SDK 5.0, the QueryOption class is no longer used. Instead, query options are set using the requestConfiguration modifier. Let’s take a simple example: If you must use QueryOptions, your only alternative is to downgrade the Microsoft Graph package to a 4.x version.

How to pass arguments to a dotnet script

Mon, 12 Jun 2023 00:00:00 GMT

Learn how to pass arguments to a dotnet script using the -- separator and access them via the Args collection.

How to fix: dotnet ef not found (dotnet-ef does not exist)

Sun, 11 Jun 2023 00:00:00 GMT

Fix the 'dotnet-ef does not exist' / 'dotnet ef command not found' error by installing the EF Core CLI as a global or local .NET tool.

How to start programming with C#

Sun, 11 Jun 2023 00:00:00 GMT

A beginner's guide to getting started with C# programming, from setting up Visual Studio to writing your first program and finding learning resources.

How to switch to C# 12

Sat, 10 Jun 2023 00:00:00 GMT

Fix C# 12 language version errors by updating your target framework to .NET 8 or setting LangVersion in your .csproj file.

What’s new in C# 12

Sat, 10 Jun 2023 00:00:00 GMT

An overview of new features in C# 12, including primary constructors, default lambda parameters, collection expressions, inline arrays, and more.

What’s new in .NET 8

Sat, 10 Jun 2023 00:00:00 GMT

.NET 8 was released on November 14, 2023 as an LTS (Long Term Support) version, meaning it will continue to receive support, updates, and bug fixes for at least three years from its release date. As usual, .NET 8 brings support for a new version of the C# language, namely C# 12. Check out our dedicated page…

C# 12 – Default values for parameters in lambda expressions

Tue, 09 May 2023 00:00:00 GMT

C# 12 lets you specify default parameter values and params arrays in lambda expressions, just like in methods and local functions.

C# 11 – Generic attributes

Tue, 21 Mar 2023 00:00:00 GMT

Learn how to define and use generic attributes in C# 11, including restrictions on type arguments and common error messages.

C# 11 – file access modifier & file-scoped types

Sat, 18 Mar 2023 00:00:00 GMT

Learn how the C# 11 file access modifier restricts a type's scope to the file in which it is declared, helping avoid name collisions with source generators.

C# 11 – Interpolated raw string literal

Fri, 17 Mar 2023 00:00:00 GMT

Learn how to use interpolated raw string literals in C# 11, including escaping braces, multiple $ characters, and conditional operators.

C# 11 raw string literals (triple-quote syntax)

Wed, 15 Mar 2023 00:00:00 GMT

Use C# 11 raw string literals (triple-quote `"""` syntax) to embed whitespace, newlines, and quotes without escape sequences. Rules and examples.

How to switch to C# 11

Tue, 14 Mar 2023 00:00:00 GMT

Fix the 'Feature is not available in C# 10.0' error by switching to C# 11 via target framework or LangVersion in your .csproj file.

C# throw if null: ArgumentNullException.ThrowIfNull (.NET 6+)

Sat, 11 Mar 2023 00:00:00 GMT

Use ArgumentNullException.ThrowIfNull in .NET 6+ for concise null checks, or use throw expressions in C# 7+ for older frameworks.

The specified version of Microsoft.NetCore.App or Microsoft.AspNetCore.App was not found.

Sun, 20 Dec 2020 00:00:00 GMT

Fix the 'Microsoft.NetCore.App or Microsoft.AspNetCore.App was not found' error by updating your Azure App Service stack and .NET runtime version.

Azure DevOps Fix: .NET Core SDK requires logout or session restart

Fri, 20 Nov 2020 00:00:00 GMT

How to fix the Azure DevOps build error 'Since you just installed the .NET Core SDK, you will need to logout or restart your session' by switching the build agent specification.

Get Embedded Resource Stream in .NET Core

Fri, 20 Nov 2020 00:00:00 GMT

Learn how to retrieve an embedded resource stream in .NET Core by understanding how resource names are composed and using GetManifestResourceStream.

Azure Functions vs WebJobs – Which to choose

Wed, 18 Nov 2020 00:00:00 GMT

Compare Azure Functions and WebJobs: key differences in scaling, pricing, triggers, and when to choose one over the other.

Which to choose: Logic Apps vs Microsoft Power Automate

Wed, 18 Nov 2020 00:00:00 GMT

Compare Azure Logic Apps and Microsoft Power Automate to determine which workflow automation service is best suited for your use case.

How to use appsettings.json with Xamarin.Forms

Fri, 13 Nov 2020 00:00:00 GMT

Learn how to use appsettings.json configuration files with Xamarin.Forms by embedding the file as a resource and building an IConfiguration object.

Creating a cross-platform chat app using Xamarin Forms and SignalR

Mon, 09 Nov 2020 00:00:00 GMT

Build a cross-platform real-time chat app in under 5 minutes using Xamarin Forms for the client and ASP.NET Core SignalR for the backend.

How to fix WordPress Missing MySQL extension after MultiPHP upgrade on HostGator

Fri, 06 Nov 2020 00:00:00 GMT

Fix the 'Missing MySQL extension' WordPress error after upgrading PHP via the MultiPHP manager on HostGator by removing the obsolete handler from .htaccess.

How to publicly expose your local SignalR service for consumption by mobile clients using ngrok

Wed, 04 Nov 2020 00:00:00 GMT

Use ngrok to publicly expose your local SignalR service so mobile clients can connect without network configuration or SSL workarounds.

What is the difference between a MegaByte (MB) and a MebiByte (MiB)?

Fri, 07 Aug 2020 00:00:00 GMT

Learn the difference between megabytes (MB) and mebibytes (MiB), why 1 MB equals 1000 KB (not 1024), and how different operating systems handle these units.

Polls for Streamlabs – interact with your viewers

Thu, 06 Aug 2020 00:00:00 GMT

Learn how to set up and use Streamlabs Polls to interact with your viewers in real-time during your stream using chat-based voting.

C# using var (using declaration)

Fri, 01 May 2020 00:00:00 GMT

Use C# 8 `using var` declarations to dispose IDisposable objects without nested braces. Syntax, scope rules, and when to prefer `using` blocks instead.

C# 8.0 Null-coalescing assignment ??=

Sun, 05 Apr 2020 00:00:00 GMT

Learn how the C# 8.0 null-coalescing assignment operator (??=) works, with practical examples including caching and conditional assignment.

get_category_link generating incorrect url including /blog/

Sat, 04 Apr 2020 00:00:00 GMT

Fix for WordPress get_category_link generating incorrect URLs that include /blog/ in the path, causing 404 errors on category pages.

Technology changes on a daily basis, should your business try to keep up?

Sat, 04 Apr 2020 00:00:00 GMT

Should your business chase every new technology trend? Probably not. Learn when to upgrade and when to focus on delivering value to your users instead.

Xamarin Startup Tracing for Android

Sat, 04 Apr 2020 00:00:00 GMT

Improve your Xamarin Android app startup time by up to 48% using startup tracing, which AOT-compiles only the code needed at launch.

AdMob Native Ads in Xamarin Forms (Android)

Fri, 20 Sep 2019 00:00:00 GMT

Step-by-step guide to implementing AdMob Native Ads in a Xamarin Forms Android app using a custom renderer.

Lighthouse report: Properly size images

Sun, 28 Jul 2019 00:00:00 GMT

Improve your Lighthouse performance score by properly sizing and optimizing images for the web using tools like Squoosh.

Xamarin Forms – Using OnPlatform

Sat, 27 Jul 2019 00:00:00 GMT

Learn how to use OnPlatform in Xamarin Forms to set platform-specific property values in both XAML and C#.

Lighthouse report: Defer offscreen images in WordPress

Wed, 01 May 2019 00:00:00 GMT

Improve your WordPress site's Lighthouse performance score by deferring offscreen images with lazy loading.

Use your Android phone as a webcam for Streamlabs

Tue, 30 Apr 2019 00:00:00 GMT

Turn your old Android phone into a webcam for Streamlabs OBS using DroidCam, with step-by-step setup instructions.

Audit your site’s performance, accessibility and user experience using Google Lighthouse

Mon, 29 Apr 2019 00:00:00 GMT

Learn how to use Google Lighthouse to audit your website's performance, accessibility, and user experience directly from Chrome DevTools.

Animating backgrounds with Xamarin Forms

Wed, 02 Jan 2019 00:00:00 GMT

Create a smooth animated background effect in Xamarin Forms using ScaleTo animations on layered BoxViews.

Getting started with CSS in Xamarin Forms 3

Wed, 18 Apr 2018 00:00:00 GMT

Learn how to use Cascading StyleSheets (CSS) in Xamarin Forms 3, including inline CDATA styles and embedded CSS files.

Extending your Xamarin Forms AdMob renderer to display Microsoft Ads on UWP

Sun, 08 Apr 2018 00:00:00 GMT

Learn how to extend your Xamarin Forms AdMob renderer to display Microsoft Ads on UWP using the Microsoft Advertising SDK.

Upgrading to Xamarin Forms 3

Sat, 07 Apr 2018 00:00:00 GMT

A quick guide to upgrading to Xamarin Forms 3, including common build errors and how to fix them.

UWP – Using an Acrylic Brush in your Xamarin Forms MasterDetail menu

Tue, 16 Jan 2018 00:00:00 GMT

Apply the UWP Acrylic Brush to a Xamarin Forms MasterDetail menu using a native platform renderer without any third-party libraries.

AdMob Smart Banner sizing in Xamarin Forms

Sat, 30 Dec 2017 00:00:00 GMT

How to calculate the correct AdMob Smart Banner height in Xamarin Forms based on screen density-independent pixels.

Xamarin ListView performance & replacing it with Syncfusion SfListView

Sat, 16 Dec 2017 00:00:00 GMT

Improve Xamarin Forms ListView scrolling performance with caching strategies, template optimization, and Syncfusion SfListView.

How To: Add AdMob to your Xamarin Forms app

Sun, 27 Sep 2015 00:00:00 GMT

Step-by-step guide to integrating AdMob ads into your Xamarin Forms app on Android and iOS using custom view renderers.

Fix Xamarin error – Csc.exe exited with code -1073741790. (MSB6006)

Fri, 28 Aug 2015 00:00:00 GMT

Fix the Xamarin Csc.exe MSB6006 error by running as Administrator or cleaning the solution bin and obj folders.

Changing the Cordova version used by Hybrid Apps in Visual Studio 2013

Sat, 08 Nov 2014 00:00:00 GMT

How to update the Cordova version used by Hybrid Apps in Visual Studio 2013 by editing the platforms.js file.

How long does it take a PC to count to one trillion

Sun, 13 Oct 2013 00:00:00 GMT

Benchmarking how long it takes a PC to count to one trillion and beyond, with updated results from 2023.

Adding speech recognition to your WP8 app

Sun, 23 Jun 2013 00:00:00 GMT

Add speech recognition to your Windows Phone 8 app using the SpeechTextBox control from the Windows Phone toolkit.

Periodically update your live tiles using ScheduledTaskAgent

Sun, 23 Jun 2013 00:00:00 GMT

Use a ScheduledTaskAgent to periodically update your Windows Phone live tiles from an RSS feed.

Creating wide tiles for your Windows Phone 7 app

Sun, 05 May 2013 00:00:00 GMT

Create wide live tiles for both Windows Phone 7 and 8 using the MangoPollo library with a single piece of code.

Isolated Storage Settings Helper for Windows Phone

Sat, 03 Nov 2012 00:00:00 GMT

A simple IsolatedStorageSettingsHelper class for Windows Phone with methods to get, save, and batch-save items in IsolatedStorageSettings.

Fix Firefox Tabs Having Strange Colors in Windows 8

Thu, 01 Nov 2012 00:00:00 GMT

How to fix the Firefox tab color glitch on Windows 8 with nVidia graphics cards by disabling hardware acceleration.

AdMob crashing Windows Phone apps. What is the alternative?

Sun, 16 Sep 2012 00:00:00 GMT

AdMob was crashing my Windows Phone app via WebBrowser.InvokeScript. Here's the stack trace, the root cause, and alternative ad networks like InnerActive.

Mobile HTML5 and jQuery webinar week

Sat, 09 Jun 2012 00:00:00 GMT

A series of 3 free webinars on HTML5 and jQuery covering getting started, working with data, and building a real-world app.

Windows 8 and Secure Boot – What if your PC doesn’t support it?

Tue, 05 Jun 2012 00:00:00 GMT

What to do when you get the 'Secure Boot isn't compatible with your PC' error while installing Windows 8, and what Secure Boot actually is.

8bit Google Maps for NES

Sat, 31 Mar 2012 00:00:00 GMT

Google Maps 8-bit for NES: Google's April Fools' joke brings retro 8-bit graphics to Google Maps with street view, directions, and more.

3D Animations Using Pure CSS3

Sun, 04 Mar 2012 00:00:00 GMT

Learn how to create 3D animations using pure CSS3 perspective and transform transitions, with cross-browser support for WebKit and Firefox.

CSS Textured / Noisy Gradient Background

Fri, 02 Mar 2012 00:00:00 GMT

How to create textured, noisy gradient backgrounds in CSS by combining gradient and noise image layers using the background-image property.

CSS How to use Custom Fonts

Fri, 02 Mar 2012 00:00:00 GMT

Learn how to use custom fonts in CSS3 with the @font-face rule, including syntax examples and a demo.

Metro TimeBlock

Wed, 08 Feb 2012 00:00:00 GMT

Metro TimeBlock is a customizable time display control for Windows Phone that lets you set any color, background, and size.

How to install Windows 8 using a USB drive

Wed, 01 Feb 2012 00:00:00 GMT

Step-by-step guide to installing Windows 8 from a USB drive using the Windows 7 USB/DVD Download Tool, including tips on formatting, BIOS settings, and troubleshooting.

Metro and WinRT Webinar on February 2nd

Thu, 26 Jan 2012 00:00:00 GMT

SilverlightShow webinar on Metro and WinRT for Silverlight/WPF developers, covering how to build Windows 8 apps using your existing XAML experience.

C# Convert Hex To Color

Sat, 21 Jan 2012 00:00:00 GMT

A C# extension method that converts hex color codes (both RGB and ARGB formats) to Color objects.

Windows Phone 7: Getting the current GPS location from the device

Sun, 15 Jan 2012 00:00:00 GMT

How to get the current GPS location on a Windows Phone 7 device using GeoCoordinateWatcher and the PositionChanged event.

How to create your own code snippets in Visual Studio

Sat, 14 Jan 2012 00:00:00 GMT

Step-by-step guide to creating your own code snippets in Visual Studio 2010, including simple snippets and using literals for replaceable parameters.

Improve productivity by using code snippets

Fri, 06 Jan 2012 00:00:00 GMT

Learn how code snippets in Visual Studio can improve your productivity by letting you insert reusable pieces of code with a short alias.

31 Days of Windows Phone Metro Design

Mon, 02 Jan 2012 00:00:00 GMT

A new series of articles called 31 Days of Windows Phone Metro Design covers metro design principles and how to make your apps look great.

Leveraging Windows Azure for the Windows Phone Developer – Webinar

Mon, 02 Jan 2012 00:00:00 GMT

Upcoming SilverlightShow webinar by Samidip Basu on leveraging Windows Azure for Windows Phone development, covering push notifications, OData, SQL Azure, and more.

Transparent TextBox for Windows Phone

Mon, 02 Jan 2012 00:00:00 GMT

A XAML style for Windows Phone that makes a TextBox fully transparent, including removing the white background focus effect when tapped.

Expression Blend 4 has stopped working? Here’s your FIX.

Sun, 01 Jan 2012 00:00:00 GMT

Fix for Expression Blend 4 crashing after installing Visual Studio 11 Dev Preview or .NET Framework 4.5, with the ngen commands needed to resolve it.