public bool Add_Item(OrderItem item)
{
try
{
if (!Orderitem_list.Contains(item))
{
Orderitem_list.Add(item);
Order_total_consumption += item.total_price;
return(true);
}
else
{
return(false);
}
}
catch (Exception e)
{
throw new Exception("添加商品失败", e);
}
}
public bool Delete_Item(string name_of_item)
{
bool flag = false;
try
{
for (int i = 0; i < Orderitem_list.Count; i++)
{
if (Orderitem_list[i].name_of_item == name_of_item)
{
Orderitem_list.Remove(Orderitem_list[i]);
flag = true;
}
}
return(flag);
}
catch (Exception e)
{
throw new Exception("删除商品失败", e);
}
}
