HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create("http://192.168.0.200/index2.html");
try
{
  HttpWebResponse respon = (HttpWebResponse)myReq.GetResponse();
}
catch (WebException ex)
{
    HttpWebResponse res = (HttpWebResponse)ex.Response;
    Stream rs = res.GetResponseStream();
    Encoding encode = Encoding.GetEncoding("utf-8");
    StreamReader readStream = new StreamReader(rs, encode);
    string tmp = readStream.ReadToEnd();
    res.Close();
    readStream.Close();
    MessageBox.Show(tmp);
}