C# documentation

Learn how to write any application using the C# programming language.

Choose your path

Get started

• New to programming? Start with beginner tutorials
• In-browser tutorial: Hello world
• C# beginner video series

Overview

• Experienced developer? A tour of C#
• Learn C# for Java developers
• Learn C# for JavaScript developers
• Learn C# for Python developers

Training

• Foundational C# Certification
• What you can build with C#

Fundamentals

Overview

• A tour of C#
• Inside a C# program
• C# highlights video series
• C# language strategy

Concept

• Type system
• Object oriented programming
• Pattern matching
• Exceptions
• Coding style

Tutorial

• Build file-based apps
• Intro to classes
• Object oriented C#
• Converting types
• Pattern matching
• Use LINQ to query data

What's new

What's new

• What's new in C# 14
• What's new in C# 13
• What's new in C# 12

Tutorial

• Explore record types
• Explore top level statements

Reference

• Breaking changes in the C# compiler
• Version compatibility

Key concepts

Overview

• What you can build with C#
• C# language strategy
• Programming concepts

Concept

• Language Integrated Query (LINQ)
• Asynchronous programming

Training

• Learn C# for Java developers
• Learn C# for JavaScript developers
• Learn C# for Python developers

C# language reference

Reference

• Language reference
• Keywords
• Operators and expressions
• Tokens

Stay in touch

Reference

• C# on Q&A
• .NET developer community
• C# on Stack Overflow
• C# on Discord
• YouTube