var serviceAddr = Convert.ToString(ConfigurationManager.AppSettings["auth"]);
            var client_id = Convert.ToString(ConfigurationManager.AppSettings["ClientId"]);
            var username = Convert.ToString(ConfigurationManager.AppSettings["UserName"]);
            var password = Convert.ToString(ConfigurationManager.AppSettings["UserPWD"]);
            var client_secret = Convert.ToString(ConfigurationManager.AppSettings["ClientSec"]);
            var EncKey = "HDI";
            var SFservice = serviceAddr + "?grant_type=password&client_id=" + Decrypt(client_id, EncKey) + "&client_secret=" + Decrypt(client_secret, EncKey) + "&username=" + username + "&password=" + Decrypt(password, EncKey);

            var httpWebRequest = (HttpWebRequest)WebRequest.Create(SFservice);
            httpWebRequest.ContentType = "application/json; charset=utf-8";
            httpWebRequest.Method = "POST";
            var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
            var streamReader = new StreamReader(httpResponse.GetResponseStream());
            var result = streamReader.ReadToEnd();
            SFDCResponseAuthToken data = JsonConvert.DeserializeObject<SFDCResponseAuthToken>(result);
            Logger.LogInformation("Token Generated : OAuth " + data.access_token);
            return "OAuth " + data.access_token;