#949 – What’s in Which Version of C#

Here’s a brief history of the different version of C# that have been released:

• Version 1.0 – Jan, 2002 – .NET 1.0, Visual Studio .NET 2002
• Version 1.2 – Apr, 2003 – .NET 1.1, Visual Studio .NET 2003
  • foreach loops automatically call Dispose if enumerator supports IDisposable
• Version 2.0 – Nov, 2005 – .NET 2.0, Visual Studio 2005
  • Anonymous methods
  • Generics
  • Iterators
  • Method group conversions (omit explicit delegate instantiation)
  • Nullable Types
  • Partial types
  • Private property setters
• Version 3.0 – Nov, 2007 – .NET 3.5, Visual Studio 2008
  • Anonymous types
  • Auto-Implemented properties
  • Expression trees
  • Extension methods
  • Implicitly typed variables
  • Lambda expressions
  • Object and collection initializers
  • Partial method
  • Query expressions
• Version 4.0 – Apr, 2010 – .NET 4, Visual Studio 2010
  • Dynamic binding
  • Embedding primary interop assemblies
  • Generic covariance, contravariance
  • Named and optional arguments
• Version 5.0 – Aug, 2012 – .NET 4.5, Visual Studio 2012
  • Asynchronous methods (async/await)
  • Caller info attributes to pass caller info to a method