C#各版本汇总

C#版本	.NET版本	发布日期
C# 1.0	.NET Framework 1.0	2002-2-13
C# 1.1	.NET Framework 1.1	2003-4-24
C# 2.0	.NET Framework 2.0	2005-11-7
	.NET Framework 3.0	2007-11-6
C# 3.0	.NET Framework 3.5	2007-11-19
C# 4.0	.NET Framework 4.0	2010-4-12
C# 5.0	.NET Framework 4.5	2012-8-15
C# 6.0	.NET Framework 4.6	2015-7-20
	.NET Core 1.0	2016-6-27
C# 7.0	.NET Core 1.1	2017-3-7
	.NET Framework 4.6.2	2016-8-2
C# 7.1	.NET Framework 4.7	2017-4-5
	.NET Core 2.0	2016-8-14
C# 7.2	.NET Framework 4.7.1	2017-10-17
C# 7.3	.NET Framework 4.7.2	2018-4-30
	.NET Core 2.1	2018-5-30
	.NET Core 2.2	2018-12-4
	.NET Framework 4.8	2019-4-18
C# 8.0	.NET Core 3.0	2019-9-23
	.NET Core 3.1	2019-12-3
C# 9.0	.NET 5	2020-9-4
	.NET 5	2020-10-13
C# 10.0	.NET 6	2021-11-9
C# 11.0	.NET 7	2022-11-8
C# 12.0	.NET 8	2023-6-14