using System;
using System.IO;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
namespace ipip
{

static string netIP()
   {
    Uri uri = new Uri("http://www.ikaka.com/ip/index.asp");//查本机网络IP的网页
    HttpWebRequest req = (HttpWebRequest)WebRequest.Create(uri);
    req.Method = "POST";
    req.ContentType = "application/x-www-form-urlencoded";
    req.ContentLength = 0;
    req.CookieContainer = new CookieContainer();
    req.GetRequestStream().Write(new byte [0], 0, 0);
    HttpWebResponse res = (HttpWebResponse)(req.GetResponse());
    StreamReader rs = new StreamReader(res.GetResponseStream(), Encoding.GetEncoding("GB18030"));
    string s = rs.ReadToEnd();
    rs.Close();
    req.Abort();
    res.Close();
    Match m = Regex.Match(s, @"IP：\[(?<IP>[0-9\.]*)\]");
    if (m.Success) return m.Groups["IP"].Value;
    string strnetIP= string.Empty;
    return strnetIP;
   }

}