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Tag: dotnet-11

296 posts · Page 5 of 30

2026-08-29 errors maui dotnet

Fix: Doesn't support required ABI when installing a .NET MAUI Android app

The APK has no native library for the device's CPU. Since .NET 9 the default Android RuntimeIdentifiers are 64-bit only, so the fix is to set RuntimeIdentifiers explicitly. Covers ADB0020, XA0036, NETSDK1083, the ABI to RID mapping, the Play Console wording, and why the four-RID snippet everyone copies breaks on .NET 11.

2026-08-29 errors dotnet docker

Fix: failed to resolve source metadata for mcr.microsoft.com/dotnet/aspnet

BuildKit cannot read the manifest for your base image. Check the tag exists, repair the Docker credential helper, open both MCR endpoints, then pre-pull for offline builds.

2026-08-28 aspire dotnet dotnet-11

Aspire 13.5 Puts a Real Terminal Inside the Dashboard

WithTerminal() gives a resource an interactive PTY session you can type into from the dashboard or attach to from your own shell. It is experimental, it detaches the debugger, and the Shell option you may have written against is gone.

2026-08-20 aspnetcore dotnet error-handling

ASP.NET Core Stops Turning 413 Into 500 in UseExceptionHandler

A PR merged into dotnet/aspnetcore main on August 19, 2026 makes ExceptionHandlerMiddleware honour BadHttpRequestException.StatusCode instead of overwriting it with 500.

2026-08-20 errors dotnet dotnet-11

Fix: [FromForm] Dictionary<string, string> is always null in a minimal API

A [FromForm] Dictionary in a minimal API binds with an empty prefix: the form keys must be [key], not metadata[key]. Wrap it in a class to keep readable names.

2026-08-19 errors swashbuckle openapi

Fix: cannot target OpenAPI 3.0 after upgrading Swashbuckle.AspNetCore to v9

Swashbuckle 8 and later emit openapi 3.0.4, not 3.0.1, and there is no OpenApiSpecVersion for a patch version. Why it changed, and four ways to pin the string your tooling expects.

2026-08-19 errors openapi swagger

Fix: Swagger UI shows Unable to render this definition after upgrading to .NET 11

ASP.NET Core 11 emits openapi 3.2.0 by default and Swagger UI below 10.1.5 rejects it. Upgrade Swashbuckle.AspNetCore.SwaggerUI, or pin OpenApiVersion back to OpenApi3_1.

2026-08-18 dotnet-11 msbuild dotnet-sdk

MSBuild Server Is On by Default in .NET 11 Preview 7

Preview 7 flips MSBuild server from opt-in to on by default, so back-to-back dotnet build and dotnet test calls reuse a warm worker process. Here is what changed, how to opt out, and how to prove the server actually engaged.

2026-08-17 ef-core ef-core-11 sql-server

How to generate a primary key from a database sequence on insert in EF Core 11

Move a key off IDENTITY and onto a SQL Server sequence in EF Core 11 with UseSequence: the exact SQL EF emits, why explicit key values suddenly work without IDENTITY_INSERT, the bigint sequence feeding an int column, and the gaps you have to design around.

2026-08-16 csharp dotnet dotnet-11

How to download a file from a Blazor component without JavaScript interop

Skip the downloadFileFromStream JS module entirely. Render an anchor with the download attribute pointing at a minimal API endpoint that returns TypedResults.File, or POST a plain HTML form with an AntiforgeryToken. Covers why the download attribute is what stops Blazor's enhanced navigation from swallowing the click, why data-enhance silently discards the file, and the cookie-vs-bearer auth trap.