private void dgvAllDish_CellDoubleClick(object sender, DataGridViewCellEventArgs e) { //获得订单编号 int orderId = Convert.ToInt32(this.Tag); //获得菜品编号 int dishId = Convert.ToInt32(dgvAllDish.Rows[e.RowIndex].Cells[0].Value); //执行点菜操作 if (oiBll.ChooseDishes(orderId, dishId)) { //点菜成功 dgvOrderDetail.AutoGenerateColumns = false; dgvOrderDetail.DataSource = oiBll.GetDetailList(orderId); } }