Scaffolding EntityFramework 6 Unable to cast object of type 'System.Data.Entity.Core.Objects.ObjectContext' to 'System.Data.Objects.ObjectContext'

问题

I wanna use Scaffolding in EntityFrameWork 6, but get this:

Unable to retrieve metadata for '[myNameSpace].Models.prod'. Unable to cast object of type 'System.Data.Entity.Core.Objects.ObjectContext' to type 'System.Data.Objects.ObjectContext'.

Does EF 6 support scaffolding?

Update

After some while, microsoft realease new upgrade for support scafolding and some others features

I think it doesn't work while you upgrade vs IDE to 2013

回答1:

I'm sorry but it is not supported ASP.NET MVC 4 scaffolding does not support Entity Framework 6 or later

回答2:

I was battling with this kind of problem for almost 3 days, but I later found two solutions:

Command

1. Open an empty MVC Solution
2. Open your Package manager console
3. Type this command (Install-Package EntityFramework -Version 5.0.0 )

Default Framework

Select an internet application option of the ASP.NET MVC project template on Visual Studio 2012. By default Entity framework 5 came with it so there is no need to run your package manager console again.

Best of luck!

回答3:

ASP.NET MVC 4 scaffolding does not support Entity Framework 6 or later version.

1.Need to uninstall Entity framework6 or later version Tools->NuGet package manager->Package manager console PM> uninstall-package entityframework -version 6.1.1

2.Install entity framework 5

PM> install-package entityframework -version 5.0.0.0

3.Need to change web.config

To change as it bellow

来源：https://stackoverflow.com/questions/19513599/scaffolding-entityframework-6-unable-to-cast-object-of-type-system-data-entity