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I decided to use Dynamic Data Entities Web Site in VS2012.

So, I created this Web Site, then added App_Code directory and added a new edmx to it and named it myDB.edmx. After that I uncommented the code line in Global.asax which registers the entity context :

DefaultModel.RegisterContext(typeof(myDBEntities), new ContextConfiguration() { ScaffoldAllTables = true });

But when I run the website this error occurs :

The context type 'myDBEntities' is not supported.

how can I fix it?

p.s: You now there are some differences between using L2S by Dynamic Data L2S Web Site and using Entity Framework by Dynamic Data Entities Web Site.

Konstantin
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amin behzadi
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    You need to add a little more information to your question. For example what kind of context, are you using code first, dbcontext or model first? I had a similar problem, and this question suggests you may be using the wrong constructor overload, or (depending on whether you're using code first) may need additional components: [link]http://stackoverflow.com/questions/440943/how-can-we-get-dynamicdata-working-with-efpocoadapter and [link]http://forums.asp.net/t/1451758.aspx/1 Try the suggestion at the end and see if that doesn't at least bring you closer to a solution – reckface Oct 04 '12 at 11:22
  • thanks buddy, As you see, at first I created my database and then created the edmx file from my database. everything is so clear, there are no complexity and I don`t know why it dose not work...! – amin behzadi Oct 06 '12 at 11:37

4 Answers4

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I am still looking for the reason, but right now the only option is to create the project in VS2010 and then migrate the project into VS2012 and then I don't have any problem running the application

Tomas Dale
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This problem happens because in Visual Studio 2012 you get DbContext (instead of ObjectContext as in Visual Studio 2010) code generated by default for all new models created with the EF Designer. In order to solve one you need to revert back to ObjectContext code generation.

For more information see Reverting to ObjectContext in EF Designer.

Konstantin
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0

  1. Delete the TT files from the model

  2. Change the "Code Generation Stategy" to "Default"

Ehab Ibrahim
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Within the Global.asax file, uncomment the other RegisterContext line instead.

 DefaultModel.RegisterContext( _
           New System.Func(Of Object)(Function() DirectCast(New [Your edmx](), IObjectContextAdapter).ObjectContext), _
           New ContextConfiguration() With {.ScaffoldAllTables = True} _
         )
NickNack76
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