partial void DeleteHD_Comp(HD_Comp instance);
 partial void UpdateHD_Comp(HD_Comp instance);
		private void detach_HD_Comp(HD_Comp entity)
		{
			this.SendPropertyChanging();
			entity.HD_Contact = null;
		}
 partial void InsertHD_Comp(HD_Comp instance);
		private void attach_HD_Comp(HD_Comp entity)
		{
			this.SendPropertyChanging();
			entity.HD_Contact = this;
		}