C# (.NET)

C# is a modern, object-oriented, and type-safe programming language developed by Microsoft. Powered by the open-source, cross-platform .NET runtime, C# is widely used for building web services, cloud-native microservices, desktop applications, mobile apps, and game development.

Installation

You can install the official Microsoft .NET SDK on Ubuntu directly via apt or using Microsoft's installation script.

Option 1: Using APT (Recommended)

Ubuntu repositories include native packages for the .NET SDK. Update your package index and install the LTS release:

apt update
apt install -y dotnet-sdk-8.0

To install .NET 9 SDK:

apt update
apt install -y dotnet-sdk-9.0

Option 2: Using the Official Install Script

If you prefer installing directly without system repository dependencies:

curl -sSL https://dot.net/v1/dotnet-install.sh | bash -s -- --channel 8.0
export PATH=$PATH:$HOME/.dotnet

To make the environment variable persistent, add export PATH=$PATH:$HOME/.dotnet to your ~/.bashrc.

Verification

Confirm that the .NET CLI and SDK are installed and operational:

dotnet --version
dotnet --list-sdks

Writing and Running Code

Using the .NET CLI

The standard workflow uses dotnet new to scaffold a console project:

dotnet new console -o HelloApp
cd HelloApp
dotnet run

Manual Project File and Source Code

Create a Program.cs file:

using System;

namespace HelloWorld
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello, World from C# in TIDE!");
        }
    }
}

Build and execute the application with the .NET runner:

dotnet run

To produce an optimized release binary:

dotnet publish -c Release -o ./bin
./bin/HelloApp

Official Resources

• Official Website