C# Language Support

Summary

Feature	Status	Notes
Maintainability	✔	Complexity, duplication, code smells
Custom checks	✔
Security scanning	✔	AppSec, dependencies, and secrets
Code metrics	✔
Code coverage	✔

Maintainability
Complexity	✔	Aka cognitive complexity
Cyclomatic complexity	✔
Identical code duplication	✔
Similar code duplication	✔
Code smells	✔
Custom checks
Semgrep	✔
ripgrep	✔
Security scanning
Gitleaks	✔	Secrets scanning
Semgrep	✔	AppSec (SAST)
Trivy	✔	Dependency scanning (SCA) for NuGet
TruffleHog	✔	Secrets scanning
Code coverage
Cobertura coverage format	✔

By default, C# files are defined as:

[file_types.csharp]
globs = ["*.cs"]

These patterns can be overridden from qlty.toml.

We officially support C# 8+ and later for maintainability checks and code coverage. Each plugin may have its own version requirements.