Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
694 views
in Technique[技术] by (71.8m points)

c# - Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib, Version=4.0.0.0 Error

My .NET site is working fine on Localhost. But, on my Server. I get this error.

"Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'."

(Can't post screenshot, due to Stack Overflow policy)

It's something to do with asp:ScriptManager. I have used it before on the same server, but now, it's showing an error.

PS: When I remove Scriptmanager, the code runs fine.

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

This error comes about when you compile an application against .Net 4.5 but then run it on a machine that only has 4.0 installed.

In .Net 4.5 the ExtensionAttribute class was moved from System.Core to mscorlib. There is a type forwarder in System.Core that points to the new location in mscorlib. If you compile an app against 4.5 it will expect to find ExtensionAttribute in mscorlib. If you then run it against 4.0 you will get this exception because in actually lives in System.Core in 4.0

To fix this either deploy 4.5 to the server or make sure that you build against 4.0


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...