The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

csharp hacktoberfest roslyn visual-basic visual-studio
100 Open Issues Need Help Last updated: Jul 2, 2026

Open Issues Need Help

View All on GitHub
help wanted Area-Compilers Feature - Nullable Reference Types Feature - Simple Programs

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE Concept-Continuous Improvement IDE-IntelliSense

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-IDE Developer Community IDE-IntelliSense CodeLens

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity Feature - Simple Programs

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Code Gen Quality Feature - Collection Expressions

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Analyzers

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-Compilers Feature - Nullable Reference Types

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Feature Request

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity Feature - Run File

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Feature - Nullable Reference Types

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-Compilers Feature - Source Generators

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-Compilers Feature - Nullable Reference Types

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-IDE IDE-CodeStyle Feature - IDE0059

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity Feature - Primary Constructors

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Feature - Readonly References

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Code Gen Quality Ongoing-Quality-Candidate

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity Feature - Extension Everything

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers untriaged

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity Feature - Ref Fields

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers 4 - In Review Feature - Extension Everything

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Feature - Pattern Matching Code Gen Quality

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Concept-API Area-Compilers Documentation

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers 4 - In Review untriaged

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE 4 - In Review Feature - Extension Everything

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Feature - Nullable Reference Types

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Analyzers Feature Request Feature - IDE0079

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Code Gen Quality

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-Compilers Concept-Diagnostic Clarity Feature - Async Streams

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-Compilers Concept-Diagnostic Clarity Need More Info

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-Compilers Concept-Diagnostic Clarity Feature - Tuples

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Language-C# Area-Compilers Concept-Diagnostic Clarity Feature - Tuples

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Language-C# Area-Compilers Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-Compilers Feature Request Concept-Diagnostic Clarity

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE Concept-Continuous Improvement IDE-IntelliSense

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE Concept-Continuous Improvement Developer Community

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
Bug help wanted Area-IDE

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE Concept-Design Debt

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE IDE-IntelliSense

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE IDE-Formatter Feature - Rename

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE Developer Community Feature - Extract Interface

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE IDE-Formatter

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE Feature - Rename

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE Feature - IDE0059

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE Feature - IDE0059

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE Language-VB

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE IDE-CodeStyle

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE IDE-CodeStyle

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE Design Notes IDE-CodeStyle

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio
help wanted Area-IDE

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

C#
#csharp#hacktoberfest#roslyn#visual-basic#visual-studio