csharp-debug

name	csharp-debug
description	Debug C# compiler errors, runtime exceptions, failing tests, unexpected behavior, async issues, nullability problems, LINQ mistakes, serialization bugs, project build errors, and .NET tooling failures.
metadata	{"short-description":"Debug C# errors and failing behavior"}

C# Debug

Use $csharp-tutor mode=debug.

Treat all user text after $csharp-debug as the error, failing code, stack trace, test failure, or debugging goal. Use the main csharp-tutor skill as the source of truth.

Load these csharp-tutor references when useful:

• references/common-csharp-pitfalls.md
• references/quickfix-guidance.md
• references/compiler-error-library.md
• references/build-guidance.md
• references/debug-lab-guidance.md
• references/tooling-and-analyzers.md
• references/analyzer-tooling-guidance.md
• references/project-inspection.md
• references/testing-guidance.md
• references/response-templates.md

Give the likely cause, how to confirm it, the smallest fix, and why the fix works.

Standalone Guidance

• Core rule: Keep the answer centered on the concrete debug decision, failure mode, or contract.
• Avoid: Giving generic C# advice without tying it to the debug concern.
• Minimal example: Console.WriteLine(value is null ? "null" : value);