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Tag: dotnet-10

65 posts · Page 3 of 7

2026-08-11 errors aspnetcore dotnet

Fix: The type or namespace name 'OpenApiReference' could not be found

OpenApiReference was deleted in Microsoft.OpenApi 2.0. Changing the using to Microsoft.OpenApi is not enough: replace each usage with a typed reference such as OpenApiSchemaReference.

2026-08-09 csharp dotnet dotnet-11

How to run a file-based C# app with `dotnet run app.cs` in .NET 11

A complete guide to file-based C# apps: running a single .cs file with dotnet run, the #:package, #:sdk, #:property, #:project and #:include directives, multi-file scripts with #:ref, argument and stdin handling, the build cache, native AOT publishing, packaging as a dotnet tool, and dotnet project convert when the script outgrows itself.

2026-08-05 errors csharp csharp-14

Fix: CS1998 "This async method lacks 'await' operators and will run synchronously" in C#

CS1998 means an async method has no await, so it runs synchronously. Drop the async modifier and return Task.FromResult, or add the await you forgot.

2026-05-27 dotnet maui android

.NET MAUI 10 SR6 finishes Material 3 on Android behind a single UseMaterial3 flag

MAUI 10 SR6 (10.0.60) extends Material 3 theming to Button, Entry, SearchBar, DatePicker, Slider, ProgressBar, ImageButton, Switch, and Shell on Android. Opt in with one MSBuild property. No custom renderers, no styles.xml edits.

2026-05-20 comparison csharp async

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

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.

2026-05-20 dotnet dotnet-10 nuget

NuGet Package Pruning Is On by Default in .NET 10

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

2026-05-20 comparison csharp records

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

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.

2026-05-19 csharp-14 csharp dotnet-10

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

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.

2026-05-05 mcp ai-agents ef-core

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

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.

2026-04-28 dotnet-10 aspnetcore openapi

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

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().