如果给定的程序集是正确的，CLR如何知道？

Question

If we have a .NET executable that's using a .NET library, how does the CLR ensure you are using the correct version of the dll? CLRwise what is considered be the "correct dll version", to start with?

Does it only look at the version? Looks also at the build-time(?). Maybe it looks at an hash or something?

Thanks

Answer 1

You may start to learn about .NET versioning,

http://msdn.microsoft.com/en-us/library/51ket42z(VS.71).aspx

Answer 2

它采用编译期间使用的一个，由完全限定名称标识 - 不仅包括程序集名称，还包括完整版本信息和数字签名指纹（如果有）。

Answer 3

The other answers already cover the essence of it.

Basically, the Framework checks for assembly name, version, and signature of an assembly to find a match.
The name and version (and more stuff!) you can set from code (AssemblyVersion attributes), and you can easily sign it with the help of VS, too.

The signature involves creating a .pfx file (VS will generate one for you), and checking the "sign assembly" in the build settings. This will ensure that more than one assemblies can coexist with the same name and version.
(So if two companies accidentally created two things with the same name, you can still use them together.)