private void PingWebsites()
        {
            var ping  = new System.Net.NetworkInformation.Ping();
            var sites = SitesRepository.GetWebsiteToCheck();

            foreach (var item in sites)
            {
                try
                {
                    var result = ping.Send(item.Url);
                    SitesRepository.SaveStatusCheck(item.Id, result.Status.ToString());
                }
                catch (Exception exc)
                {
                    SitesRepository.SaveStatusCheck(item.Id, exc.Message);
                }
            }
        }