. NET and C # version history overview

Release date	. NET version	C # version	CLR version	Development tools	function Introduction
2002	1.0	1.0	Initial version	Visual Studio. Net	Initial version . NET Framework structure, see:
2003	1.1		 	visual Studio 2003	asp.net mobile control ADO. NET enhancements (ODBC, Oracle, distributed transactions ) ETC. See: http://msdn.microsoft.com/en-us/library/h88tthh0 (v=vs.90 ). aspx
2005	2.0	2.0	CLR 2.0	Visual Studio 2005	IPV6 Support CLR2.0 C # Features: Partial classes (partial class) generic type (generic collection) How iterators are implemented (yield return) Nullable types Anonymous methods Static type volatile keyword
2006	3.0				Wcf/wpf/wf
2008	3.5	3.0	 	visual Studio page	linq Plug-in model (Addin/plugin model) (System.AddIn.Contract.dll) c# Features: Implicit var type local variable (type inference) extension method lambda expression Object and collection initializer Anonymous type Auto-implemented properties Expression tree
2010	4.0	4.0	clr4.0	visual Studio	Parallel Computing (Parallel Computing) Code contract Lazy initialization (Lazy initialization) Dynamic Language Runtime (DLR) In-process version coexistence (in-process side-by-side hosting) Background garbage collection Covariance and contravariance (covariance and contravariance) c# features: optional parameter and named parameter COM interaction better support
2012	4.5	5.0		Visual Studio 2012	Better support for regular expressions Default culture for application domains Zip compression Maximum support for arrays larger than 2GB Asynchronous method Operations Promotion of parallel computing C # Features: Async/await Asynchronous Programming Support Caller Information
2013	4.5.1			Visual Studio 2013	Ability to collect diagnostic information When garbage collection, explicitly simplifies the ability to handle large object heaps (large object heap) ASP. NET app performance improvement and multi-core JIT performance improvement

. NET and C # version history overview