| 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 typesPrivate setters (properties)Method group conversions (delegates) Covariance and Contra-variance 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 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 and optional arguments Generic co- and contravariance Embedded interop types |
| C# 5.0 | .NET Framework 4.5 | Visual Studio 2012/2013 | Async features Caller information |
| C# 6.0 | .NET Framework 4.6 | Visual Studio 2013/2015 | Expression Bodied Methods Auto-property initializer nameof Expression Primary constructor Await in catch block Exception Filter String Interpolation |
| C# 7.0 | .NET Core | Visual Studio 2017 | out variables Tuples Discards Pattern Matching Local functions Generalized async return types throw Expressions |
原文：
http://www.tutorialsteacher.com/csharp/csharp-version-history