public static string HttpPost(string url, string postData, bool isPost = true)

        {

            string method = isPost ? "POST" : "GET";

            HttpHelper http = new HttpHelper();

            HttpItem item = new HttpItem()

            {

                URL = url,

                Method = method,

                ContentType = "application/x-www-form-urlencoded",

                Postdata = postData,

            };

            HttpResult result = http.GetHtml(item);

            return result.Html;

        }