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Tag: dotnet-10

88 posts · Page 5 of 9

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.

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.