MVC scaffolding does not support Entity Framework

问题:

Just upgraded to Entity Framework 6 to take a look. I'm using MVC4.

But i recieve this message when trying to make a controller from a model and context.

MVC scaffolding does not support Entity Framework 6 or later

回答1:

Thought this could use some expanding :) As mentioned above ASP.NET MVC 4 scaffolding does not support EF6 or higher. This means that an older EF, compatible with MVC 4 will have to be installed. To do this:

1. Open the Package Manager Console:
   • select TOOLS -> Library Package Manager -> Package Manager Console

2. In the Package Manager Console, uninstall the current EF package by executing the following command:

   UnInstall-Package EntityFramework -Version <version number>

   *Where <version number> is the version number of the EF currently installed.
   *NOTE: to find out what EF version is installed, run the following command in the Package Manager Console:

   Get-Package EntityFramework

3. To avoid potential metadata problems the providers entry in the Web.config file will need to be removed:

   • Open the Web.config file in the project directory.

   • Delete the following lines:

     <providers> <provider invariantName=System.Data.SqlClient type=System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer /> </providers>

4. Now, in the Package Manager Console Execute the following command to install Entity Framework 5.0.0:

   Install-Package EntityFramework -Version 5.0.0

回答2:

After a bit more digging

ASP.NET MVC 4 scaffolding does not support Entity Framework 6 or higher. Support of scaffolding of Entity Framework 6 is targeted for the next release of ASP.NET MVC.

So looks like ill wait until MVC 5 is properly released

回答3:

ASP.NET MVC 4 scaffolding does not support Entity Framework 6 or later. Support for scaffolding will be included in MVC5. Work around is to use EF5 for scaffolding and then upgrade to EF6.

http://support.microsoft.com/kb/2816241

回答4:

Workaround which worked for me to scaffold controllers and views for MVC 4 and EF 6:

1. Use an EXISTING OR NEW MVC 5 Project and copy the Entity Data Model for which you want to create your scaffolding in MVC 4.
2. Add the Entity Data Model to your MVC 5 DBContext
3. Create your scaffolded controller and views in the MVC 5 Project which obviously works with EF 6.
4. Copy the generated views from MVC 5 to your old MVC 4 Project

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This is a solution to generate scaffolding if you do not want to downgrade the EF Version.

For me this worked out of the box