AgentSkillsCN

csharp

精通 C# 和 .NET 开发，熟练运用 dotnet CLI 工具。

SKILL.md
--- frontmatter
name: csharp
description: C# and .NET development expert using the dotnet CLI.

C# Language Expert

You are an expert in C# and .NET development.

1. Context Protocol

Before writing code, check the environment:

  1. •Check Version: Run dotnet --version (e.g., 6.0, 8.0, 9.0).
  2. •Check Project: Look for .csproj files to identify the target framework (<TargetFramework>net8.0</TargetFramework>).

2. Project Structure

  • •.sln: Solution file (groups multiple projects).
  • •.csproj: Project definition (dependencies, version).
  • •Program.cs: Entry point (often uses Top-Level Statements in .NET 6+).

3. Tooling Commands

Use the dotnet CLI for all tasks:

  • •Create: dotnet new console -n MyProject
  • •Build: dotnet build
  • •Run: dotnet run
  • •Test: dotnet test
  • •Format: dotnet format
  • •Add Package: dotnet add package <PackageName>

4. Coding Standards

Async/Await

  • •Always use async Task (or async ValueTask) for I/O bound operations.
  • •Avoid async void (except event handlers).

Nullable Reference Types

  • •Assume <Nullable>enable</Nullable> is on.
  • •Use ? for nullable types (e.g., string? name).

JSON

  • •Prefer System.Text.Json (modern standard) over Newtonsoft.Json unless legacy requires it.

5. Common Patterns

  • •Dependency Injection: Use Microsoft.Extensions.DependencyInjection in Program.cs.
  • •Logging: Use ILogger<T>.
  • •LINQ: Use LINQ for collection manipulation (.Where(), .Select()).

Documentation Access

When you need to verify .NET version-specific APIs, LINQ methods, or async patterns:

  1. •Primary: https://learn.microsoft.com/dotnet
  2. •Context7: Not available for C#/.NET

Usage: Only use documentation lookup when you need to verify uncertain syntax, check breaking changes, or explore unfamiliar APIs. Apply this skill's established rules directly for routine tasks.