Entity Framework Code First and Multiple Assemblies

Question

I have a subclass in a different assembly to its base class. The parent is a POCO class used for EF Code First.

When I try to add an instance of inherited class to t

Answer 1

I'm quite new to EF (Entity Framework 4) and I got the same exception when I made changes in the model.

My problem turned out to be that I did not know EF need all the names on all the navigation properties to agree, not only their type. For example if there is a navigation property named foo, then there needs to be a declared variable in the corresponding class with the very same name.

Answer 2

I know this post is a bit old, but I was able to accomplish this using @Dave's recomendation inside the constructor:

public Context() {
    ((IObjectContextAdapter)this).ObjectContext.MetadataWorkspace.LoadFromAssembly(
        System.Reflection.Assembly.GetAssembly(
             typeof(--[Inherited DbContext]--)));
}

Answer 3

I solved this by inheriting from the first assembliy's DbContext, adding a DbSet<> for the derived class, and then adding new instances of derived type to to that.

Posted code on MSDN forum here.