Entity Framework 6 Cannot build after adding stored procedures to data model

Question

I just downloaded entity framework 6 and created a brand new project to test it. We currently use EF 5.

After adding all my tables and stored procedures, I tried to build the project but I get errors:

Value of type 'System.Data.Objects.ObjectParameter' cannot be converted to 'System.Data.Entity.Core.Objects.ObjectParameter'.

Value of type 'System.Data.Entity.Core.Objects.ObjectResult(Of DataLibrary.MyStoredProc_Result)' cannot be converted to 'System.Data.Objects.ObjectResult(Of DataLibrary.MyStoredProc_Result)'.

I cannot figure out why this will not work out-of-the-box

EF 5 had so such issues.

I am using VS 2012. .Net 4.5 Vb.net (also tried with a C# project... same issue)

Any ideas?

EDIT:

The answer was to install EF6 Tools for VS 2012. I did not know I had to do this since I thought that was installed when I added the Entity Framework package.

Answer 1

You can overcome this scenario by replacing:

using System.Data.Objects; 

With:

using System.Data.Entity.Core.Objects; 

You may need to update the using statements in your T4 templates, like your Context.tt file, so that auto-generated files continue to work when re-generating.

Before

After