static void Main(string[] args)

        {

            WebClient client = new WebClient();

            client.Encoding = Encoding.GetEncoding("gb2312");

            if (true)

            {

                WebProxy proxy = new WebProxy();

                proxy.UseDefaultCredentials = false;

                proxy.Address = new Uri("http://183.239.167.122:8080"); // new Uri("http://183.239.167.122:8080");

                client.Proxy = proxy;

            }

            string result = client.DownloadString("http://1212.ip138.com/ic.asp");

            Console.WriteLine(result);

            Console.WriteLine();

            Console.WriteLine("OVER");

            Console.ReadLine();

        }