C# language documentation

The C# guide contains articles, tutorials, and code samples to help you get started with C# and the .NET platform. Experienced developers can learn about new features in the What's new section. Experienced developers can learn details of language behavior from the reference and language specifications.

Learn to program

Major concepts and features of the C# language

Get started

• A tour of C#
• Beginner C# tutorials
• Try C# in your browser
• Inside a C# program
• C# for beginners video series
• Foundational C# Certification

Fundamentals

• Type system
• Object oriented programming
• Functional techniques
• Exceptions
• Coding style
• C# language strategy

Language concepts

• Programming concepts
• LINQ
• Asynchronous programming

Advanced language concepts

• Reflection and attributes
• Interface implementations
• Expression trees
• Native interoperability
• Performance engineering
• .NET compiler platform (roslyn) SDK

Reference

Read C# language reference material, and the C# language specifications. The C# reference provides an informative reference for the C# language. The C# language specification is the normative reference for the C# language. It's the official source for C# language syntax and semantics. Feature specifications document features not yet incorporated in the standard.

Build C# apps with the Visual Studio family

Choose Visual Studio or Visual Studio Code to build your C# applications.

Visual Studio

Visual Studio Code

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.