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First .NET Project: Hello World

Let’s build your very first .NET application! A simple “Hello World” console app will help you understand the structure of a .NET project and how to run it.

Step 1: Create a Console App Project

In Visual Studio:

  1. Click Create a new project
  2. Select Console App (.NET Core or .NET 6+)
  3. Choose a name like HelloWorldApp and click Create

You now have a basic .NET project set up!

Step 2: Modify Program.cs

This is the entry point of your application. Modify the file to print your message: 

// Program.cs
using System;

class Program
{
    static void Main()
    {
        Console.WriteLine("Hello, .NET World!");
    }
}

Step 3: Run the Project

Press Ctrl + F5 or click the green “Run” button. You should see the message displayed in the terminal: 

Hello, .NET World!

Understanding the Project Structure

  • Program.cs: Your main C# file
  • .csproj file: Project configuration file
  • Dependencies: External libraries/packages

This structure is standard for many .NET projects.

Congratulations! 🎉 You’ve just created and run your first .NET application. Next, we’ll explore the fundamentals of the C# programming language to build real-world logic.

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