Question

I have two tables, in a many-to-many relationship, with a junction table, as follows:

Member       MemberGroup        Group =========    ============       ======= PK | ID      PK | ID            PK | ID    | Name       | Member           | Name                 | Group                 | MemberSince 

I need to add all the members of a specific group to a list box. The group is selected from a data bound combo box. I was looking to do something like this:

listbox1.ItemsSource = DataModel.Members.Where(u=>u.Group == mygroup); 

However, the Member entity only contains the MemberGroup entries…. not the actual groups.

What is the best way to do this?

By the way, .NET Framework 3.5, WPF, Entity Framework, C#, SQL Server Compact Edition (2008)

Answer 1

Found the solution.

public partial class Group {     public ObjectQuery<Member> Members     {         get         {             return (from j in DataModel.MemberGroup                     where j.Group.ID == this.ID                     select j.Member) as ObjectQuery<Member>;         }     } }