C# Basic Tutorial

C# Advanced Tutorial

C# Object-Oriented Programming (OOP)

C# Version History

Read-only members, default interface methods, declaration, static local functions, one-time ref structures, nullable reference types

C# for2002Year first released with .NET Framework 1.0 was introduced, and it has developed very quickly since then. The following table lists the important features introduced in each C# version: 　　　　

Version	.NET Framework	Visual Studio	Important features
C#1.0	.NET Framework 1.0 / 1.1	Visual Studio .NET 2002	Basic features
C# 2.0	.NET Framework 2.0	Visual Studio 2005	Generics Partial types Anonymous methods Iterators Nullable types Private setter (property) Method group conversion (delegation) Covariance and contravariance Static classes
C#3.0	.NET Framework 3.0 \ 3.5	Visual Studio 2008	Implicitly typed local variables Object and collection initializers Auto-implemented properties Anonymous types Extension methods Query expressions Lambda expressions Expression trees Partial methods
C#4.0	.NET Framework 4.0	Visual Studio 2010	Dynamic binding (late binding) Named parameters and optional parameters Generic covariance and contravariance Embedded interoperability type
C#5.0	.NET Framework 4.5	Visual Studio 2012/2013	Async Attributes Caller Information
C#6.0	.NET Framework 4.6	Visual Studio 2013/2015	Expression-bodied Methods Auto-Property Initialization nameof Expressions Main Constructor Waiting in catch Blocks Exception Filters String Interpolation
C#7.0	.NET Core 2.0	Visual Studio 2017	out Variables Tuples Discarded Values Pattern Matching Local Functions Generalized Asynchronous Return Type More...
C#8.0	.NET Core 3.0	Visual Studio 2019	Read-only Members Default Interface Methods Declaration Usage Static Local Functions One-time ref structure Nullable Reference Types More...

The next section will learn how to set up the development environment for C#.

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