private void attach_Orders(Order entity)
 {
     this.SendPropertyChanging();
     entity.Customer = this;
 }
 private void detach_Orders(Order entity)
 {
     this.SendPropertyChanging();
     entity.Customer = null;
 }
 partial void DeleteOrder(Order instance);
 partial void UpdateOrder(Order instance);
 partial void InsertOrder(Order instance);
 private void detach_Orders(Order entity)
 {
     this.SendPropertyChanging();
     entity.Employee = null;
 }
 private void attach_Orders(Order entity)
 {
     this.SendPropertyChanging();
     entity.Employee = this;
 }