Could not load type 'System.Data.Entity.DbSetE

Updated from entityframework 6.0.0-beta1 to 6.0.0-rc1 and when logging into my MVC5 application i get the following error

 {"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)}

my csproj has the following references

<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>

this worked previously do i need a new version of the System.Data.Entity.Design dll? or change the assembly version in the web.config?

EDIT: Sounds like Identity Framework guys need to release a updated dll to match?

回答1:

There have been a few changes in the namespaces and moving types around. I have updated the sample from Beta1 - RC1 https://github.com/rustd/AspnetIdentitySample You can look at the following commmit to get the list of changes needed. I will add some docs soon on the project https://github.com/rustd/AspnetIdentitySample/commit/b09479a9e5c2d4ff16c459ce0e4105c5ac5302f4

回答2:

A refresh of ASP.NET Identity that fixes this issue and supports EF6 RC will be available very soon.

UPDATE: the new version is available in NuGet.

回答3:

I got this error when adding EntityFramework dll version 6 to my MVC4 project. Downgrading EntityFramework dll to version 5 resolved my issue!