Microsoft Connect(); 2018
Tune in virtually on December 4, 2018, to get the latest updates on Azure and Visual Studio from the comfort of your favorite chair.

.NET Tutorial - Hello World in 10 minutes

Not ready to install anything? Try our in-browser tutorial.

  1. Install the .NET SDK

    To start building .NET apps you just need to download and install the .NET SDK (Software Development Kit).

  2. Create your app

    Open a new command prompt and run the following commands:

    dotnet new console -o myApp
    cd myApp

    The dotnet command creates a new application of type console for you. The -o parameter creates a directory named myApp where your app is stored, and populates it with the required files. The cd myApp command puts you into the newly created app directory.

    The main file in the myApp folder isĀ Program.cs. By default, it already contains the necessary code to write "Hello World!" to the Console.

    using System;
    
    namespace myApp
    {
        class Program
        {
            static void Main(string[] args)
            {
                Console.WriteLine("Hello World!");
            }
        }
    }
  3. Run your app

    In your command prompt, run the following command:

    dotnet run

    Congratulations, you've built and run your first .NET app!

  4. Get an editor

    Visual Studio is a fully-featured integrated development environment (IDE) for developing .NET apps on Windows.

    Download .NET and Visual Studio

  5. Keep learning

    Now that you've got the basics, you can keep learning with the .NET Quick Starts. In the first Quick Start you'll learn about collections.

    Quick start: Collections