使用混合运行时版本的DLL运行ASP.NET网站是否存在任何问题

Question

Are there any issues with having an ASP.NET web site running with DLL's with mixed runtime versions?

I'm checking a web application that has been handed over to us, and the majority of the references have got Runtime Version v4.0.30319 , but I've spotted a few with Runtime Version v2.0.50727

Answer 1

There should not be any issues since .NET is backwards-compatible. However, it's recommended to match the version of your DLLs with the version of .NET you are targeting, so maybe have a look to see if any of the DLLs with v2.0.50727 Runtime Versions have newer releases.

References:

https://msdn.microsoft.com/en-us/library/47a587hk%28v=vs.71%29.aspx https://msdn.microsoft.com/en-us/magazine/ee819091.aspx