Home/ASP.NET Forums/General ASP.NET/Web Forms/Could not load type 'System.Runtime.CompilerServices.ExtensionAttribu...

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

1 reply

Last post Jan 15, 2018 07:46 AM by Cathy Zou