public void Login()
        {
            int count=3;
            for (int i = 3; i >0 ; i--)
            {
                Console.WriteLine("请输入用户名：");
                string username = Console.ReadLine();
                Console.WriteLine("请输入密码：");
                string userpwd = Console.ReadLine();
                int result = dbo.CheckUserInfo(username, userpwd);
                if (result == 1)
                {
                    Console.WriteLine("登录成功！");
                    ShowMenu();
                }
                else
                {
                    Console.WriteLine("登录失败！");
                    Login();
                }
                count = i - 1;
                break;
            }
            if (count == 0)
            {
                Console.WriteLine("您没有进入权限！");
            }
            else
            {
                Console.WriteLine("您还有[0]次机会，请重新输入。",count
            }
        }
   提示说检测到无法运行的代码 i--；

为什么无法实现 循环3次的功能啊 他是一直无限循环啊~~

都不对~~~

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