C# 1.0 (Visual Studio 2002, .Net 1.0) C# 2.0 (Visual Studio 2005, .Net 2.0) C# 3.0 (Visual Studio 2008, .Net 3.0-3.5) C# 4.0 (Visual Studio 2010, .Net 4.0-4.4) C# 5.0 (Visual Studio 2012, .Net 4.5) C# 6.0 (Visual Studio 2015, .Net 4.6) C# 7.0 (Visual Studio 2017, .Net 4.7) C# 8.0 (Visual Studio 2019 .Net 4.8) C# 9.0 (Visual Studio 2019, .Net 5.0) C# 10 (Visual Studio 2022, .Net 6.0) C# 11 (开发中，2022/04/30最后更新, .Net 7.0) ————————————————