public static void ModifyMenu(int i, OrderService os, ref bool flag)
{
try
{
bool flag_order = true;
string[] str;
switch (i)
{
case 1:
os.DisplayGoodses();
Console.WriteLine("请输入要修改的货物及其信息：（序号 名称 价格）");
str = Console.ReadLine().Split(' ', 3);
Int32.TryParse(str[0], out int num_goods);
float.TryParse(str[2], out float price);
os.ModifyGoods(num_goods, str[1], price);
break;
case 2:
os.DisplayCustomers();
Console.WriteLine("请输入要修改的客户及其信息：（序号 姓名 地址）");
str = Console.ReadLine().Split(' ', 3);
Int32.TryParse(str[0], out int num_customer);
os.ModifyCustomer(num_customer, str[1], str[2]);
break;
case 3:
while (flag_order)
{
os.DisplayOrders();
Console.WriteLine("请输入要修改的订单序号");
Int32.TryParse(Console.ReadLine(), out int num_order);
ModifyOrderMenu(num_order, os, ref flag_order);
}
break;
case 0:
flag = false;
break;
default:
Console.WriteLine("菜单中无此项");
break;
}
}
catch (Exception e)
{
Console.WriteLine($"错误：{e.Message}");
}
}