问题
I'm using Unity IoC (Microsoft.Practices.Unity) and I can compile fine, but I'm getting the following error at run time:
Could not load type 'System.Reflection.IntrospectionExtensions' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
The Unity version is: 3.0.1026.0
Is there a compatibility problem between .Net 4 and this version of Unity. Also, I get the same error when using Unity v2. If so, how might I go about resolving this issue?
EDIT: Also, I've verified that mscorlib is referenced in my project.
回答1:
RESOLVED.
Indeed I was using the .NET 4.5 preview version, which was referencing a class that didn't exist in my .NET 4.0 world. Thanks Hans Passant for the amazing speed in which you identified the problem!
来源：https://stackoverflow.com/questions/7932994/could-not-load-type-system-reflection-introspectionextensions-from-assembly-m