I am currently working on another issue in my ASP.NET MVC project. In an effort to better understand what is happening in the codebase I decided to reference the ASP.NET MVC Source Code project in my own project by adding the solution file to my references.
When I did this, I started getting HTTP 404 errors.
It just so happens I had a breakpoint set on the OnException()
method of the HandleErrorAttribute
, otherwise it might have taken a long time to find the actual problem. When I hover over the filterContext
parameter in the OnException
method call, I get this Exception
description:
The type 'System.Web.Mvc.ViewMasterPage' is ambiguous: it could come from assembly [path to assembly in GAC] or from assembly [path to assembly in my project]
The assembly in the GAC is there because I installed the ASP.NET MVC 2.0 RC2 release .
How do I best resolve this ambiguity?
System.Web.Mvc
is referenced in Web.Config
, in the <Compilation><Assemblies>
section. In my application, this entry has a public key token attribute.
I solved the problem by removing the PublicKeyToken
attribute.
So this:
<add assembly="System.Web.Mvc, Version=2.0.0.0, Culture=neutral,
PublicKeyToken=31BF3856AD364E35"/>
becomes this:
<add assembly="System.Web.Mvc, Version=2.0.0.0, Culture=neutral"/>
Apparently Visual Studio can't find the signed assembly in the GAC when the PublicKeyToken
is missing, so it is forced to use the local project assembly.
我不确定,但也许你的答案在于你的配置的assemblyBinding标签: http : //msdn.microsoft.com/en-us/library/twy1dw1e.aspx
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