partial void DeleteHdDk(HdDk instance);
 partial void UpdateHdDk(HdDk instance);
 private void detach_HdDks(HdDk entity)
 {
     this.SendPropertyChanging();
     entity.Kh = null;
 }
 partial void InsertHdDk(HdDk instance);
 private void attach_HdDks(HdDk entity)
 {
     this.SendPropertyChanging();
     entity.Kh = this;
 }