How to Use C# Playground
-
1. Write C# Code
Type your C# program using .NET classes, LINQ, or async/await.
-
2. Compile and Run
Click Run or press ⌘↵. Judge0 compiles with the Mono/Roslyn compiler and executes.
-
3. View Output
Compiler errors and Console.WriteLine() output appear in the Output panel.
The Technical Details
This interactive web utility provides fast, reliable, and completely private data transformations. In modern workflows, quick formatting, conversions, or estimations are essential. By running all logic entirely in your browser with client-side JavaScript, this tool guarantees that your data never leaves your machine. This approach delivers maximum performance and absolute data privacy, as no information is ever sent to a server.
Frequently Asked Questions
Which .NET version is used?
.NET 6 via the Mono runtime on the Judge0 CE sandbox.
Can I use NuGet packages?
No. Only the .NET base class library (BCL) is available.
Is there a time limit?
Yes. Judge0 enforces a few-second execution limit and memory cap.
Is my code private?
Code is submitted to the public Judge0 CE API. Avoid pasting sensitive data.