public static HttpWebResponse CreateGetHttpResponse(string url, int? timeout, string userAgent, CookieCollection cookies)

        {

            if (string.IsNullOrEmpty(url))

            {

                throw new ArgumentNullException("url");

            }

            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

            request.Method = "GET";

            request.UserAgent = DefaultUserAgent;

            if (!string.IsNullOrEmpty(userAgent))

            {

                request.UserAgent = userAgent;

            }

            if (timeout.HasValue)

            {

                request.Timeout = timeout.Value;

            }

            if (cookies != null)

            {

                request.CookieContainer = new CookieContainer();

                request.CookieContainer.Add(cookies);

            }

            return request.GetResponse() as HttpWebResponse;

        }

  aTimer = new System.Timers.Timer(86400000);



            aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);



            aTimer.Interval = 3000;

            aTimer.Enabled = true;

  List<Qy> qys = Get_Coms();//所有法人

            List<Qy> qysss = qys.Distinct(c => c.QYID).ToList();//所有企业

            List<string> keys = Get_Keys();

            //企业

            foreach (var item in qysss)

            {