#region 獲取手機驗證碼(創藍253)  /// <summary>  /// 獲取手機驗證碼(創藍253)  /// </summary>  /// <param name="phoneno">手機號</param>  /// <returns></returns>  [AllowAnonymous]  public async Task<IHttpActionResult> GetPhoneCode(string phoneno)  {   string account = "******", password = "******", mobile = phoneno;   Random rd = new Random(); int r = rd.Next(100000, 999999);   string content = "【您的簽名】"+"尊敬的客戶:您的驗證碼為" + r + "!";   string postStrTpl = "un={0}&pw={1}&phone={2}&msg={3}&rd=1";   UTF8Encoding encoding = new UTF8Encoding();   byte[] postData = encoding.GetBytes(string.Format(postStrTpl, account, password, mobile, content));   HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create("http://sms.253.com/msg/send");   myRequest.Method = "POST";   myRequest.ContentType = "application/x-www-form-urlencoded";   myRequest.ContentLength = postData.Length;   Stream newStream = myRequest.GetRequestStream();   newStream.Write(postData, 0, postData.Length);   newStream.Flush();   newStream.Close();   HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();   if (myResponse.StatusCode == HttpStatusCode.OK)   {    return Ok(new { code = "200", res = new { msg = "短信發送成功！", data = new { code = r } } });   }   else {    return Ok(new { code = "400", res = new { msg = "短信發送失敗！" } });   }  }  #endregion