I have two Entity Data models within a MVC3 project A and B.
I have recently added the new entity data model B to deal with some new functionality, the issue is that now the existing code has stopped working and I am getting the following error when trying to access code within entity model A.
The error message is:
Could not find the conceptual model type 'project.models.Bclass'
I do not understand why it is this new functionality has affected the current code seeing as entity model A has not change in any way. And functionality B is in a separate class and does not interfere with model A.
When the new code is removed from the project and entity model B is excluded then the code works as it should.
Here is some of the stacktrace from the error:
Exception : Could not find the conceptual model type for 'Project1.Models.CrossSession'. Application Class - method : System.Data.Metadata.Edm.MetadataWorkspace -- GetEdmSpaceType User : temp.user Url : http://localhost/project1/auth/message Stacktrace : at System.Data.Metadata.Edm.MetadataWorkspace.GetEdmSpaceType(StructuralType objectSpaceType) at System.Data.Entity.Internal.InternalContext.UpdateEntitySetMappings() at System.Data.Entity.Internal.InternalContext.TryUpdateEntitySetMappingsForType(Type entityType) at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize() at System.Data.Entity.Internal.Linq.InternalSet`1.get_InternalContext()
Solution found. It appears in some cases (randomly) there is a mix up in the code generated by the
entity framework. This is apparently a known bug and a fix should be coming in future releases. In the mean time the way around this is to move the
efm to a separate class within the solution.
I had the same problem with 2 different
.edmx files in the same project.
For the first
.edmx model I had used
"Add Code Generation Item", for the second model I hadn't. The project was building correctly but throwing that exception on runtime.
I solved generating the
.tt classes for the second
.edmx model as well.