csharp-idioms

To refactor DTOs to use records in C#, replace class definitions with record types to reduce boilerplate and improve consistency. The skill scans existing .cs files and suggests incremental migrations to records for DTOs and value objects.

Migrating C# code to file-scoped namespaces involves moving the namespace declaration to a single line ending with a semicolon. The skill detects existing patterns in .cs files and applies this modern syntax to improve code consistency.

Primary constructors for DI services require a compatible LangVersion and TargetFramework. The skill enforces compatibility by checking .csproj and Directory.Build.props, gating feature use to avoid emitting unsupported syntax during code generation.

The best way to apply pattern matching refactors in .NET is to adopt switch expressions, property patterns, and list patterns. The skill guides these refactors during code generation and migration while ensuring compatibility with your project's framework version.

Collection expressions require a specific LangVersion and TargetFramework to compile correctly. The skill checks your .editorconfig and .csproj settings to gate feature recommendations, preventing incompatible code generation.

Modern C# code generation fails on older .NET projects when features like records or primary constructors are used without checking the TargetFramework and LangVersion. The skill gates feature use by framework version to prevent incompatible syntax.