public string IP()
        {
 
            HttpWebRequest fr;
            string codeHtml = string.Empty;
            Uri targetUri = new Uri("http://www.cualesmiip.com/");
            fr = (HttpWebRequest)HttpWebRequest.Create(targetUri);
            StreamReader st = new StreamReader(fr.GetResponse().GetResponseStream());
            codeHtml = st.ReadToEnd();
            st.Close();
            string[] res = codeHtml.Split(new string[] { "Tu IP real es " }, StringSplitOptions.None);
            string[] res1 = res[1].Split(new string[] { " ( " }, StringSplitOptions.None);
            return res1[0];
        }