partial void UpdateDatVe(DatVe instance);
 partial void DeleteDatVe(DatVe instance);
 partial void InsertDatVe(DatVe instance);
		private void detach_DatVes(DatVe entity)
		{
			this.SendPropertyChanging();
			entity.SuatChieu = null;
		}
		private void attach_DatVes(DatVe entity)
		{
			this.SendPropertyChanging();
			entity.SuatChieu = this;
		}
		private void detach_DatVes(DatVe entity)
		{
			this.SendPropertyChanging();
			entity.NguoiDung = null;
		}
		private void attach_DatVes(DatVe entity)
		{
			this.SendPropertyChanging();
			entity.NguoiDung = this;
		}