>>Assume this class:

public partial class Library : EntityObject
>>    {
>>         public Library Parent
>>        {
>>            get { return new Library();}
>>         }
>>    }

As you may guess given the EntityObject inheritance the really thing is more complex, generated by the EDMX builder and cannot be modified. I'd like it to implement an Interface:

public interface ITreeview
>>    {
>>        ITreeview Parent { get; }
>>    }

But (I suppose expectedly) adding this won't compile:

public partial class Library : ITreeview
>>    {
>>    }

Is there anyway of achieving what I want ?
>
>Entity Framework edmx? Straight up or thru Ria Services?

In this instance just straight edmx. No projection. But I don't think it would make any difference either way