protected void Page_Load(object sender, EventArgs e)
        {
            string strUrl = Request.Url.ToString().Substring(0, Request.Url.ToString().LastIndexOf('/')) + "/WebForm1.aspx";
            ASCIIEncoding code = new ASCIIEncoding();
            string postData = "aa=iceapple.net&bb=yibin.net"; //这是要post的数据 
            byte[] data = code.GetBytes(postData);
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUrl);
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded"; //这里的ContentType很重要! 
            request.ContentLength = data.Length;
            using (Stream stream = request.GetRequestStream()) //获取数据流,该流是可写入的 
            {
                stream.Write(data, 0, data.Length); //发送数据流 
                stream.Close();
            }

            HttpWebResponse res = (HttpWebResponse)request.GetResponse();
            StreamReader sr = new StreamReader(res.GetResponseStream(), System.Text.Encoding.Default);
            string backstr = sr.ReadToEnd();
            Response.Write(backstr);
            sr.Close();
            res.Close();

        }