Interfaces in C#

Interfaces are one of the most basic features in C# that you need to know to become a .NET developer. You can learn more about interfaces in C#, or watch the video:

Download the code example

You'll need to fill out the code example form. We will send you an email where you can download the code example.

Software

This is the software that will need to be installed onto your machine.

• Visual Studio 2026. Version 18.0.0 or above. It will work with the free community version.

• .NET 10 SDK. Version 10.0.0 or above.

The application

Open up RoundTheCode.Interfaces.slnx in Visual Studio. It loads a console application with everything covered in the tutorial and video. Feel free to modify and run it in a terminal window to test the code.