HttpWebRequest myHttpWebRequest = (HttpWebRequest)HttpWebRequest.Create("http://2ip.ru");
                        myHttpWebRequest.Proxy = new WebProxy(exploded[0], exploded[1]);
                        HttpWebResponse myHttpWebResponse =(HttpWebResponse)myHttpWebRequest.GetResponse();
                        
                        StreamReader myStreamReader =
                          new StreamReader(myHttpWebResponse.GetResponseStream(),
                          Encoding.GetEncoding(1251));
                        richTextBox2.Text+= myStreamReader.ReadToEnd();