Online C# Compiler & Runner
Execute C# code with modern .NET 8 SDK. Fast build pipeline, clear console output, and support for LINQ and modern language features. With code.thecoder.in, you can write, compile, and execute C# code directly inside your web browser. No local SDKs, compilers, or configuration required.
C# Quick Syntax Reference
Conditional Statements
Use if/else for conditional logic.
if (x > 5) {
Console.WriteLine("x is greater than 5");
} else {
Console.WriteLine("x is less than or equal to 5");
}Classes
Define and instantiate classes.
public class Person {
public string Name { get; set; }
public int Age { get; set; }
}
Person p = new Person { Name = "John", Age = 30 };LINQ
Use LINQ for data querying and manipulation.
var evenNumbers = list.Where(x => x % 2 == 0);
foreach (var num in evenNumbers) {
Console.WriteLine(num);
}Explore Other Online Compilers
Frequently Asked Questions (C# Compiler)
Which .NET version is used?
We use official Microsoft .NET 8 SDK for compiling release builds.
Can I write and execute C# code online with .NET 8 in my browser without any setup?
Yes, TheCoder offers a fully managed online .NET 8 environment. You can write, compile, and run C# console applications directly in your browser with zero installation or configuration.
Do I need to create a Main class or Console.WriteLine statements? Can I just write the core logic?
You can write your complete .NET 8 console application, including the Main class and Console.WriteLine statements, inside the editor. No special shortcuts or wrappers are needed.
Is there any limit to the amount of input data I can provide?
Standard input size is limited to 100 KB, which is sufficient for most algorithmic and general-purpose programming tasks.
How long does it take to compile and run a C# program?
Compilation typically takes less than 500 ms, and execution completes in under 2 seconds for typical console applications.