Agent skills by dotnet, page 3

Guide for theming .NET MAUI apps — light/dark mode via AppThemeBinding, ResourceDictionary theme switching, DynamicResource bindings, system theme detection, and user theme preferences.

dotnet/skills

Migrate a .NET 10 project or solution to .NET 11 and resolve all breaking changes.

dotnet/skills

Convert .NET tests from NUnit 3/4 to MSTest v4 while preserving VSTest or MTP.

dotnet/skills

Convert .NET tests from xUnit.net v2/v3 to MSTest v4 while preserving VSTest or MTP.

dotnet/skills

DO NOT INVOKE when the primary request explicitly asks to convert, migrate, modernize, or rewrite a legacy/old-style project to SDK style; use msbuild-modernization.

dotnet/skills

Identify a .NET project's test platform, framework, command mode, and SDK-style vs classic project system.

dotnet/skills

ALWAYS USE when asked to fix, rewrite, update, improve, modernize, show corrected code for, or explain existing MSTest tests or MSTest-specific configuration.

dotnet/skills

Implementation details for the EF Core Azure Cosmos DB provider.

dotnet/efcore

Guides creation and modification of ASP.NET Core Web API endpoints with correct HTTP semantics, OpenAPI metadata, and error handling.

dotnet/skills

Create a new ASP.NET Core web application or web site using Blazor.

dotnet/skills

Refreshes an existing .NET release-notes milestone branch set incrementally, regenerating data only when the preview moved and keeping human edits and review replies.

dotnet/core

Builds and runs the code snippets behind .NET release-note features against the exact milestone SDK, and records what must change to move maintained samples to a new preview.

dotnet/core

Deep code review of PR or materialized candidate-patch changes for correctness, safety, and MAUI conventions.

dotnet/maui

Guide developers through capturing diagnostic artifacts to diagnose production .NET performance issues.

dotnet/skills

Analyze assertion quality, depth, variety, and false confidence in existing tests.

dotnet/skills

Author and review GitHub Actions workflow YAML safely so syntactically-valid YAML can't ship a workflow that GitHub Actions refuses to run.

dotnet/skills

Establish MSBuild/.NET build performance baselines before optimizing.

dotnet/skills

Diagnoses .NET Framework CLR activation issues using CLR activation logs (CLRLoad logs) produced by mscoree.dll.

dotnet/skills

ALWAYS USE whenever asked to write, add, or generate unit tests for existing code in xUnit, MSTest, NUnit, pytest, Vitest/Jest, Go, or another framework, including "tests only for" one helper…

dotnet/skills

Build forms, validate data, and react to user input in Blazor.

dotnet/skills

Add authentication and authorization to a Blazor Web App, accounting for the app's render mode.

dotnet/skills

Guides conversion of a pre-.NET 8 Blazor Server app into a .NET 8+ Blazor Web App.

dotnet/skills

Share state between components that don't have a direct parent-child parameter relationship, using cascading values, scoped services with change events, or CascadingValueSource via DI.

dotnet/skills

Choosing an MSBuild CopyToOutputDirectory / CopyToPublishDirectory mode: Never, PreserveNewest, Always, and IfDifferent (MSBuild 17.13+), plus $(SkipUnchangedFilesOnCopyAlways).

dotnet/skills

Calculates CRAP (Change Risk Anti-Patterns) for a named .NET method, class, or file.

dotnet/skills

Generate or scaffold ASP.NET Core code — Razor Pages, Blazor components, MVC controllers, views, and Minimal API endpoints — without using ASP.NET Core CLI scaffolding/code-generation tools.

dotnet/skills

Scaffolds new agent skills for the dotnet/skills repository.

dotnet/skills

Run file-based C apps with the .NET CLI when the user explicitly wants C/.NET code without creating a project.

dotnet/skills

ACTIVATION PREREQUISITE: the request or discovered target must explicitly identify C, .NET, .cs, or .csproj; otherwise stay dormant without invoking this skill.

dotnet/skills

Detects duplicate boilerplate, copy-paste tests, and structural maintainability issues across .NET test suites.

dotnet/skills

Own MSBuild import and hook discovery. An agent skill from dotnet/skills.

dotnet/skills

Call APIs, load data into components, and handle the async lifecycle in Blazor.

dotnet/skills

DO NOT USE when the target already consumes an injected interface or built-in abstraction such as IFileSystem or TimeProvider, even if the request says "generate a wrapper"; no new wrapper is needed.

dotnet/skills

ALWAYS USE when asked to migrate, replace, or make testable existing C static calls with a named wrapper or built-in abstraction: DateTime.UtcNow/Now or DateTimeOffset.UtcNow to TimeProvider/IClock…

dotnet/skills

Migrate .NET test projects from xUnit.net v2 to xunit.v3 and fix v3 breaks.

dotnet/skills

Set up or recover MTP hot reload for a long-lived console-host edit/re-run loop in a Microsoft Testing Platform project.

dotnet/skills

Optimize and improve the performance of slow Entity Framework Core (EF Core) queries: make them generate less SQL, make fewer database round-trips, and return results faster.

dotnet/skills

ALWAYS USE before running .NET tests or answering with a test command or flags.

dotnet/skills

MUST USE when an existing .NET test project was excluded from a .slnf/CI solution filter, disappeared from .sln/.slnx discovery, or lost its production ProjectReference; also for requests to set up…

dotnet/skills

Install a .NET SDK locally for safe preview testing, specific-version pinning, or reproducible team setups — without modifying the system-wide installation.

dotnet/skills

Make interactive Blazor components work correctly with prerendering.

dotnet/skills

Imperative guidance for the System.Text.Json APIs added in .NET 11: the built-in JsonNamingPolicy.PascalCase naming policy, and the strongly-typed generic JsonSerializerOptions.GetTypeInfo and…

dotnet/skills

Guides creation and validation of custom dotnet new templates from existing projects.

dotnet/skills

Compares two or more dotnet new templates side by side to help users choose between them based on parameters, feature support, frameworks, and classifications.

dotnet/skills

Helps find, inspect, and compare (at a high level) .NET project templates.

dotnet/skills

Creates .NET projects from templates with validated parameters, smart defaults, Central Package Management adaptation, and latest NuGet version resolution.

dotnet/skills

Validates custom dotnet new templates for correctness before publishing.

dotnet/skills

MUST USE for C/.NET deterministic tests that require the smallest production seam for DateTime/Task.Delay/File/Environment/Guid/Random, static API preservation, nested/parallel overrides, or no real…

dotnet/skills