ACRCloudWebAPITest.IdentifyProtocolV2.postHttp C# (CSharp) Method

        public static string postHttp(string url, IDictionary<string, string> datas, int timeout)
        {
            string result = "";
              if (url == null || url == "" || datas == null)
              {
              return result;
              }
              List<string> arrDatas = new List<string>();
              foreach (var item in datas)
              {
              arrDatas.Add(item.Key + "=" + HttpUtility.UrlEncode(item.Value));
              }
              string postDatas = string.Join("&", arrDatas.ToArray());
              HttpWebRequest request = null;
              HttpWebResponse response = null;
              Stream writer = null;
              StreamReader myReader = null;
              try
              {
              request = (HttpWebRequest)WebRequest.Create(url);
              request.Timeout = timeout;
              request.Method = "POST";
              request.ContentType = "application/x-www-form-urlencoded";
              byte[] postDatasBytes = System.Text.Encoding.UTF8.GetBytes(postDatas);
              request.ContentLength = postDatasBytes.Length;
              writer = request.GetRequestStream();
              writer.Write(postDatasBytes, 0, postDatasBytes.Length);
              response = (HttpWebResponse)request.GetResponse();
              myReader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
              result = myReader.ReadToEnd();
              }
              catch (WebException e)
              {
              Debug.WriteLine("timeout:\n" + e.ToString());
              }
              catch (Exception e)
              {
              Debug.WriteLine("other excption:" + e.ToString());
              }
              finally
              {
              if (writer != null)
              {
                  writer.Close();
                  writer = null;
              }
              if (myReader != null)
              {
                  myReader.Close();
                  myReader = null;
              }
              if (request != null)
              {
                  request.Abort();
                  request = null;
              }
              if (response != null)
              {
                  response.Close();
                  response = null;
              }
              }
              return result;
        }