LINQ duda consulta...

[Malenko]

Y modificando el join?

Yo probaría con algo así:

Código:

 List<Order> listOrderConditional =  (from objOrder1 in listOrder
                                                   join objOrder2 in listOrder on objOrder1.Email equals objOrder2.Email
                                                   where objOrder1.CreditCard!=objOrder2.CreditCard && objOrder1.DeadId==objOrder2.DeadId
                                                   select objOrder1).ToList();