String u = "http://202.91.245.120/HttpPostSms.aspx?userid=" + smsName + "&pwd=" + smsPwd + "&mobiles=" + smsMobile + "&msgcontent=" + smsContent + "";

        HttpWebRequest request = HttpWebRequest.Create(u) as HttpWebRequest;
        HttpWebResponse response = request.GetResponse() as HttpWebResponse;
        Stream resStream = response.GetResponseStream();
        StreamReader sr = new StreamReader(resStream, System.Text.Encoding.GetEncoding("GB2312"));
        String returnText = sr.ReadToEnd();
        resStream.Close();
        sr.Close();
        
        Label2.Text = returnText.ToString();
        if (returnText.Substring(0,3).Equals("100"))
        {
            Label1.Text = "成功";
        }
        else
        {
            Label1.Text = "失败";
        }