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无法从程序集 'EntityFramework' 中加载类型 'System.Data.Entity.DbSetExtensions'

entity-frameworkentity-framework-6asp.net-mvc-5asp.net-identity
4

我将从entityframework 6.0.0-beta1更新到6.0.0-rc1，但当我登录我的MVC5应用程序时，出现以下错误

 {"Could not load type 'System.Data.Entity.DbSetExtensions' from assembly 'EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.":"System.Data.Entity.DbSetExtensions"}
    [System.TypeLoadException]: {"Could not load type 'System.Data.Entity.DbSetExtensions' from assembly 'EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.":"System.Data.Entity.DbSetExtensions"}
    Data: {System.Collections.ListDictionaryInternal}
    HelpLink: null
    HResult: -2146233054
    InnerException: null
    Message: "Could not load type 'System.Data.Entity.DbSetExtensions' from assembly 'EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'."
    Source: "Microsoft.AspNet.Identity.EntityFramework"
    StackTrace: "   at Microsoft.AspNet.Identity.EntityFramework.Store`1.GetByID(Object id)\r\n   at Microsoft.AspNet.Identity.EntityFramework.UserSecretStore`1.<Find>d__c.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at Microsoft.AspNet.Identity.EntityFramework.UserSecretStore`1.<Validate>d__8.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at Microsoft.AspNet.Identity.EntityFramework.IdentityStoreManager.<ValidateLocalLogin>d__20.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.
CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at Microsoft.AspNet.Identity.EntityFramework.IdentityAuthenticationManager.<CheckPasswordAndSignIn>d__22.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at BASRaT5.Controllers.AccountController.<Login>d__2.MoveNext() in c:\\dev\\BASRAT\\BASRaT5\\BASRaT5\\Controllers\\AccountController.cs:line 53\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(
Task task)\r\n   at lambda_method(Closure , Task )\r\n   at System.Threading.Tasks.TaskHelpersExtensions.ThrowIfFaulted(Task task)\r\n   at System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult)\r\n   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass34.<BeginInvokeAsynchronousActionMethod>b__33(IAsyncResult asyncResult)\r\n   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)\r\n   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()\r\n   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)\r\n   at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3c()\r\n   at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass45.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3e()\r\n   at System.Web.Mvc.Async.AsyncControllerAct
ionInvoker.<>c__DisplayClass30.<BeginInvokeActionMethodWithFilters>b__2f(IAsyncResult asyncResult)\r\n   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)\r\n   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()\r\n   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult)\r\n   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass1e.<>c__DisplayClass28.<BeginInvokeAction>b__19()\r\n   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass1e.<BeginInvokeAction>b__1b(IAsyncResult asyncResult)"
    TargetSite: {System.Threading.Tasks.Task`1[TEntity] GetByID(System.Object)}

我的 csproj 文件有以下引用

<Reference Include="System.Data" />
<Reference Include="System.Data.Entity.Design" />
<Reference Include="System.Data.DataSetExtensions" />

web.config

 <system.web>
    <compilation debug="true" targetFramework="4.5">
      <assemblies>
        <add assembly="System.Data.Entity.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
      </assemblies>
   </compilation
 </system.web>

这之前可以正常工作，我需要一个新版本的System.Data.Entity.Design dll吗？还是需要在web.config中更改程序集版本？

编辑： 听起来好像Identity Framework的开发人员需要发布更新的dll来匹配？

3个回答
4

ASP.NET Identity的更新已经解决了这个问题并支持EF6 RC，很快就会发布。

更新：新版本已经在NuGet上发布。

3
刚刚更新了新的软件包，现在出现了很多错误，例如找不到 IdentityStoreManager 和 IdentityStoreContext 等。一些命名空间是否已被重命名或移动了？ - Tim
版本之间发生了很多变化-更多信息请参见此处-http://stackoverflow.com/questions/17441157/compiler-errors-after-updating-microsoft-aspnet-identity-in-mvc5 - JsAndDotNet
2
嗨@pranav rastogi，感谢更新代码。我之前遇到了一些问题，试图使它与我的现有结构配合使用。如果有一些文档说明会很好。顺便说一下，当我将代码替换到我的项目中时，它会创建以“AspNet”为前缀的表，而在示例项目中则没有。 - Tim
1

当我将 EntityFramework dll 版本 6 添加到我的 MVC4 项目时，出现了这个错误。将 EntityFramework dll 降级到版本 5 解决了我的问题！

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