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Quick Answer

Our free online C# editor lets you write, compile, and run C# code directly in your browser. Supports .NET 6+ features including LINQ, async/await, records, and pattern matching with no Visual Studio required.

How It Works

1

Write your C# code with a Main method

2

Click Run to compile and execute

3

View output and compile errors in console

4

Share your code via URL

Key Facts

  • Compile and run C# code in your browser
  • .NET 6+ with modern language features
  • Full LINQ and Collections support
  • Async/await and Task support
  • No Visual Studio installation required
  • Syntax highlighting and IntelliSense-style errors

Frequently Asked Questions

Which .NET version is supported?

We support .NET 6+ with C# 10/11 features including records, pattern matching, global usings, and top-level statements.

Can I use LINQ?

Yes, full LINQ support including query syntax, method syntax, and all standard LINQ operators like Select, Where, GroupBy.

Are NuGet packages available?

The .NET base class library is available. For NuGet packages, use a local Visual Studio or VS Code setup.

Can I test async code?

Yes, full async/await support including Task, async Main, and cancellation tokens.