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