我不确定你的实际问题是什么，但如果是当前版本是什么..

I am not sure what your actual question is, but if it is what are the current versions..

C#: 3.0
.NET 框架:3.5

您可能还想看看 此细分图表.它提供了框架、语言和 CLR 关系.

You might also want to take a look at this breakdown chart. It provides the Framework, language and CLR relations.