private void detach_headorders(headorder entity)
 {
     this.SendPropertyChanging();
     entity.msemployee = null;
 }
 partial void Deleteheadorder(headorder instance);
 partial void Insertheadorder(headorder instance);
 partial void Updateheadorder(headorder instance);
 private void attach_headorders(headorder entity)
 {
     this.SendPropertyChanging();
     entity.msmember = this;
 }