Curated Issues

C# Good First Issues

Browse open source issues tagged with C# in the issue metadata. Results stay focused on work that can become public contribution evidence.

3,635 matching issues

C#

Slice signals

  • Average annotated difficulty: 2.5/5 across 3,635 issues.
  • 80% of 3,635 time estimates are one day or less.
Open
Suboptimal codegen for `is` pattern compared to .NET 6/7
Area-CompilersCode Gen QualityOngoing-Quality-Candidatehelp wanted
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

dotnet / roslyn · #80052 · Aug 26, 2025 · C# · 20,414 stars

3 comments1 reaction1 assignee
Open
`(x >> N) << N` should reduce to a mask
area-CodeGen-coreclrhelp wantedtenet-performance
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

dotnet / runtime · #118643 · Aug 12, 2025 · C# · 17,886 stars

3 comments1 reaction0 assignees