判断用户和密码

Console.WriteLine("请输入用户名和密码");
            string one = Console.ReadLine(); //获取了当前的数据
            string two = Convert.ToString(one);
            int  cons=two.IndexOf(" ");
            if (cons > 0)
            {
                string var1 = two.Substring(0, cons);
                string var2 = two.Substring(cons, two.Length - cons - 1);

                if (var1.ToUpper() == "ADMIN" && var2.ToUpper() == "MYPASS")
                {
                    Console.WriteLine("登陆成功");
                }
                else
                {
                    Console.WriteLine("登录失败");
                }

            }
            else
            {
                Console.WriteLine("必须输入两个字符串，且以空格隔开");
                Console.WriteLine("按任意键退出");
            }
            Console.ReadKey();