.NET documentation

Learn to use .NET to create applications on any platform using C#, F#, and Visual Basic. Browse API reference, sample code, tutorials, and more.

.NET: Free. Cross platform. Open source.

A developer platform for building all your apps: web, mobile, desktop, gaming, IoT, and more. Supported on Windows, Linux, and macOS.

Programming languages

Write your app in your favorite language

Write .NET apps in C#, F#, or Visual Basic

A modern, object-oriented, and type-safe language

A simple language for succinct, robust, and performant code

An approachable language with readable syntax

Create your application

You can choose web, mobile, desktop, gaming, IoT, and more.

API and language reference

Search the .NET API and language reference documentation.