Start Debugging

Tag: aspnet-core

10 posts

2026-08-13 errors blazor aspnet-core

Fix: 404 Not Found for blazor.server.js after installing a new .NET SDK

blazor.server.js 404s on .NET 10 because the script stopped being an embedded resource. Add RequiresAspNetWebAssets to the host project, or make sure it has a .razor file.

2026-05-28 migration dotnet-framework dotnet-11

Migrate from .NET Framework 4.8 to .NET 11 in 2026

A version-pinned migration playbook for moving a .NET Framework 4.8 codebase to .NET 11 LTS in 2026, covering the SDK-style csproj rewrite, System.Web to ASP.NET Core, WCF, EF6 to EF Core 11, BinaryFormatter removal, AppDomain replacements, and a realistic rollback plan.

2026-04-30 llm ai-agents anthropic-sdk

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

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.

2026-04-28 azure dotnet dotnet-11

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

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.

2026-04-24 aspnet-core dotnet dotnet-11

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

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.

2026-04-20 dotnet-11 aspnet-core kestrel

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

.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.

2026-04-16 blazor aspnet-core dotnet-11

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

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.

2026-04-13 blazor aspnet-core dotnet-11

Blazor SSR Finally Gets TempData in .NET 11

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.

2026-04-12 aspnet-core dotnet-11 opentelemetry

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

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

2026-04-05 dotnet-11 blazor webassembly

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

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.