Using LINQ to Objects to find items in one collection that do not match another

Question

I want to find all items in one collection that do not match another collection. The collections are not of the same type, though; I want to write a lambda expression to spe

Answer 1

         var nonManagers = ( from e1 in employees
                             select e1 ).Except(
                                   from m in managers
                                   from e2 in employees
                                   where m.EmployeeId == e2.Id
                                   select e2 );