得到真实外网IP、IP所在国家、省份、地区

#region##得到真实IP以及所在地详细信息
   /// <summary>
   /// 得到真实IP以及所在地详细信息（Porschev）
   /// </summary>
   /// <returns></returns>
   public string GetIpDetails()
   {
       string url = "http://www.ip138.com/ips8.asp";   //设置获取IP地址和国家源码的网址
       string regStr = "(?<=<td\\s*align=\\\"center\\\">)[^<]*?(?=<br/><br/></td>)";
       string ipRegStr = "((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)";    //IP正则
       string ip = string.Empty;   //IP地址
       string country = string.Empty;  //国家
       string adr = string.Empty;   //省市
       string html = GetHtml(url);       //得到网页源码
       Regex reg = new Regex(regStr, RegexOptions.None);
       Match ma = reg.Match(html);        html = ma.Value;
       Regex ipReg = new Regex(ipRegStr, RegexOptions.None);
       ma = ipReg.Match(html);
       ip = ma.Value;     //得到IP
       int index = html.LastIndexOf("：") + 1;
       country = html.Substring(index);                   //得到国家
       adr = GetAdrByIp(ip);
       return "IP：" + ip + "  国家：" + country + "  省市：" + adr;
   }
   #endregion

   #region##通过IP得到IP所在地省市
   /// <summary>
   /// 通过IP得到IP所在地省市（Porschev）
   /// </summary>
   /// <param name="ip"></param>
   /// <returns></returns>
   public string GetAdrByIp(string ip)
   {
       string url = "http://www.cz88.net/ip/?ip=" + ip;
       string regStr = "(?<=<span\\s*id=\\\"cz_addr\\\">).*?(?=</span>)";
       string html = GetHtml(url);       //得到网页源码
       Regex reg = new Regex(regStr, RegexOptions.None);
       Match ma = reg.Match(html);
       html = ma.Value;
       string[] arr = html.Split(' ');
       return arr[0];
   }
   #endregion

   #region##获取HTML源码信息
   /// <summary>
   /// 获取HTML源码信息(Porschev)
   /// </summary>
   /// <param name="url">获取地址</param>
   /// <returns>HTML源码</returns>
   public string GetHtml(string url)
   {
       Uri uri = new Uri(url);
       WebRequest wr = WebRequest.Create(uri);
       Stream s = wr.GetResponse().GetResponseStream();
       StreamReader sr = new StreamReader(s, Encoding.Default);
       return sr.ReadToEnd();
   }
   #endregion