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  • The type 'System.Data.Objects.DataClasses.EntityObject' is defined in an assembly that is not referenced解决方法

    I got this error today when working on a migrated ASP .NET MVC 4 project. It was especially confusing for me because I already had a reference to System.Data.Entity in my web project.

    The type 'System.Data.Objects.DataClasses.EntityObject' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. c:\tfs\trunk\Site\Views\Customers\Details.cshtml 19

    It turns out that for some reason the assembly information for System.Data.Entity was not added to my Web.config after I added the reference. I tried removing and adding back the reference in my project with no success. In order to get everything working again I had to manually add the assembly to my Web.config.

    Update: Before trying to update your Web.config manually you should install the EntityFramework NuGet package in your project. If that doesn't work, then try the solution below.

     <system.web>
        <compilation debug="true" targetFramework="4.0">
          <assemblies>
            <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
          </assemblies>
        </compilation>
      </system.web>
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  • 原文地址:https://www.cnblogs.com/dupeng0811/p/3101821.html
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