Modern C# Coding Standards

When to Use This Skill

Use this skill when:

• Writing new C# code or refactoring existing code
• Designing public APIs for libraries or services
• Optimizing performance-critical code paths
• Implementing domain models with strong typing
• Building async/await-heavy applications
• Working with binary data, buffers, or high-throughput scenarios

Reference Files

• value-objects-and-patterns.md: Full value object examples and pattern matching code
• performance-and-api-design.md: Span/Memory examples and API design principles
• composition-and-error-handling.md: Composition over inheritance, Result type, testing patterns
• anti-patterns-and-reflection.md: Reflection avoidance and common anti-patterns