private void LvTableInfo_DoubleClick(object sender, EventArgs e)
{
//获取被点的餐桌项
ListView lv1 = sender as ListView;
ListViewItem lvi = lv1.SelectedItems[0];
//获取餐桌编号
int tableId = Convert.ToInt32(lv1.SelectedItems[0].Tag);
OrderInfoBll oiBll = new OrderInfoBll();
int orderId;
if (lvi.ImageIndex == 0)
{
//当前餐桌空闲需要开单
//1.开单向OrderInfo中写入，同时更新餐桌状态
//获得订单号存到items项的Tag属性中
orderId = oiBll.CreaterOder(tableId);
//2.更新餐桌的图标为占用
lv1.SelectedItems[0].ImageIndex = 1;
}
else
{
//当前餐桌已经占用，则需要点菜
orderId = oiBll.GetOrderIdByTableTid(tableId);
}
//2.打开点菜页面
FormOrderDish formOrderDish = new FormOrderDish();
formOrderDish.Tag = orderId;
formOrderDish.ShowDialog();//模态打开
}
