Programming language: C#
License: GNU General Public License v3.0 or later
Latest version: v3.0.1

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A collection of 500+ [analyzers](src/Analyzers/README.md), [refactorings](src/Refactorings/README.md) and [fixes](src/CodeFixes/README.md) for C#, powered by Roslyn.

PROMO: Try Orang, cross-platform command-line tool from the author of Roslynator. Orang can search, replace, rename and delete directories, files and its content using the power of .NET regular expressions.


New Features

  • Roslynator for Visual Studio Code
  • [Fix all diagnostics in a solution](docs/HowToFixAllDiagnostics.md)
  • [Generate API documentation](docs/HowToGenerateDocumentation.md)


"It's so good, that I made my first ever donation." Mateusz Piasecki, Roslynator user.

Although Roslynator products are free of charge, any donation is welcome and supports further development.

Extensions for Visual Studio

Extension Comment
Roslynator 2019 contains analyzers, refactorings and fixes for CS diagnostics.
Roslynator 2017 contains analyzers, refactorings and fixes for CS diagnostics. This extension is no longer in development.

Extensions for Visual Studio Code

Extension Comment
Roslynator contains analyzers, refactorings and fixes for CS diagnostics.

NuGet Analyzers

Package Version Comment
Roslynator.Analyzers NuGet common analyzers (RCS1xxx) (list)
Roslynator.CodeAnalysis.Analyzers NuGet analyzers for Roslyn API (RCS9xxx) (list)
Roslynator.Formatting.Analyzers NuGet formatting analyzers (RCS0xxx) (list)

Note: All analyzers in package Roslynator.Formatting.Analyzers are disabled by default.

Roslynator API

  • Roslynator API is meant be used for development of your own analyzers/refactorings.
  • It does not contain any analyzers/refactorings itself.
  • See [API Reference](docs/api/README.md).
Package Version Built on top of
Roslynator.Core NuGet Microsoft.CodeAnalysis.Common
Roslynator.Workspaces.Core NuGet Microsoft.CodeAnalysis.Workspaces.Common
Roslynator.CSharp NuGet Microsoft.CodeAnalysis.CSharp
Roslynator.CSharp.Workspaces NuGet Microsoft.CodeAnalysis.CSharp.Workspaces

Roslynator Command-Line Interface


  • [Analyzers vs. Refactorings](docs/AnalyzersVsRefactorings.md)
  • [How to Configure Analyzers](docs/HowToConfigureAnalyzers.md)
  • [How to Configure Refactorings](docs/HowToConfigureRefactorings.md)
  • [How to Customize Rules for a Project](docs/HowToCustomizeRulesForProject.md)
  • [How to Fix All Diagnostics in a Solution](docs/HowToFixAllDiagnostics.md)
  • [How to Generate API Documentation](docs/HowToGenerateDocumentation.md)

Would you like to improve Roslynator documentation? Please see [how to update documentation](docs/HowToUpdateDocumentation.md).

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