asp.net send SMS

// --171 Send message interfaces
///
///
///
/// phone number
/// message content
[the OperationContract]
protected int the Page_Load (String Mobile)
{
the try
{
// posturl ConfigurationManager.AppSettings = [ "a WebReference. Service.PostUrl "];
String the Account =" "; // Check the user name to log users -> notification SMS verification code> product Overview -> API interface information -> apiId
String password =" "; // Check password user Center -> SMS notification code> product Overview -> API interface information -> apiKey
Random RAD = new new Random ();
int mobile_code = rad.Next (1000, 10000);
String Content = "your verification code is:" + mobile_code +. "Please do not disclose this code to others.";

            //Session["mobile"] = mobile;
            //Session["mobile_code"] = mobile_code;

            string postStrTpl = "account={0}&password={1}&mobile={2}&content={3}";

            UTF8Encoding encoding = new UTF8Encoding();
            byte[] postData = encoding.GetBytes(string.Format(postStrTpl, account, password, mobile, content));

            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(PostUrl);
            myRequest.Method = "POST";
            myRequest.ContentType = "application/x-www-form-urlencoded";
            myRequest.ContentLength = postData.Length;

            Stream newStream = myRequest.GetRequestStream();
            // Send the data.
            newStream.Write(postData, 0, postData.Length);
            newStream.Flush();
            newStream.Close();

            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
            if (myResponse.StatusCode == HttpStatusCode.OK)
            {
                StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);

                //Response.Write(reader.ReadToEnd());

                string res = reader.ReadToEnd();
                int len1 = res.IndexOf("</code>");
                int len2 = res.IndexOf("<code>");
                string code = res.Substring((len2 + 6), (len1 - len2 - 6));
                //Response.Write(code);
                int len3 = res.IndexOf("</msg>");
                int len4 = res.IndexOf("<msg>");
                string msg = res.Substring((len4 + 5), (len3 - len4 - 5));
                //Response.Write(msg);
                //Response.End();
                return mobile_code;
            }
            else
            {
                //访问失败
                return -1;
            }
        }
        catch (Exception)
        {

            return -1;
        }
       
    }