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Tag: dotnet-10

104 posts · Page 6 of 11

2026-08-24 dotnet maui blazor

.NET MAUI 10.0.100 adds UsePlatformHandler for custom BlazorWebView backends

MAUI 10.0.100 ships MauiBlazorWebViewBuilderExtensions.UsePlatformHandler, a supported seam for replacing BlazorWebViewHandler without reimplementing everything AddMauiBlazorWebView() registers. Two overloads, one ordering trap.

2026-08-23 how-to csharp csharp-14

How to write a static extension member that applies to every enum type in C# 14

Declare a generic extension block with a struct, Enum constraint and you get Status.Values, Status.Count, and Status.Parse on every enum in your solution. The receiver shape, the CS0704 and CS0428 traps, and why you must cache Enum.GetValues.

2026-08-18 errors csharp csharp-14

Fix: The call is ambiguous between the following methods or properties after moving to C# 14 extension members

CS0121 after moving an extension method into a C# 14 extension block: the compiler still emits the old static form. Delete the duplicate or qualify the call.

2026-08-16 system-text-json csharp csharp-14

How to make System.Text.Json ignore a property that has the required modifier

[JsonIgnore] on a required member throws InvalidOperationException: marked required but does not specify a setter. Here is why the two features collide and the four ways to ignore the property anyway, measured on .NET 10.

2026-08-14 errors flutter maui

Fix: Google Play rejects a Flutter or .NET MAUI app for missing 16 KB memory page size support

Play rejects the bundle because a 64-bit .so still has 4 KB ELF segments. Find the offending library, rebuild it with NDK r28+, and verify with zipalign -P 16.

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.

2026-08-13 errors dotnet-maui msbuild

Fix: MSB4057 The target "ResolvePackageAssets" does not exist in the project in .NET MAUI

MSB4057 means a target ran against the outer cross-targeting build of a multi-targeted MAUI project. Pass a TFM, or guard the target with a TargetFramework condition.

2026-08-12 errors dotnet dotnet-10

Fix: dotnet tool install --global dotnet-ef throws an error

Every way dotnet tool install --global dotnet-ef fails on the .NET 10 SDK, with the exact message and exit code for each: already installed, version not found, downgrade blocked, shim conflict, dead NuGet feed, and the runtime mismatch that only breaks after the install succeeds.

2026-08-12 errors aspnetcore dotnet

Fix: The 'interceptors' feature is not enabled in this namespace

CS9137 comes from the Microsoft.AspNetCore.OpenApi source generator. Add InterceptorsNamespaces to every project that calls AddOpenApi, not just the one holding the PackageReference.

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.