private void detach_OrderDetailEntities(OrderDetailEntity entity)
 {
     this.SendPropertyChanging();
     entity.OrderEntity = null;
 }
 partial void DeleteOrderDetailEntity(OrderDetailEntity instance);
 partial void InsertOrderDetailEntity(OrderDetailEntity instance);
 partial void UpdateOrderDetailEntity(OrderDetailEntity instance);
 private void attach_OrderDetailEntities(OrderDetailEntity entity)
 {
     this.SendPropertyChanging();
     entity.ProductEntity = this;
 }