Question

I’ve got two entities in the entity framework. Now I want to seperate them by putting an Interface of the DAL entity into the Domain.

So the end result would be:

DAL

• Person : IPerson (EF Entity)
• Book : IBook (EF Entity)

Domain

• Interfaces (Folder)
  • IPerson
  • IBook
• Person (Domain entity)
• Book (Domain entity)

Now the problem is, should my Dal.Person have a virtual Book or IBook?
How should both the DAL.Person, IPerson and Domain.Person look like (give me just really small example for the interfacing)

Answer 1

EF doesn’t support working with interfaces so you cannot have public virtual IBook ... in your Person entity if you want to use it as navigation property handled by EF.