consumerkey = ConfigurationManager.AppSettings["Salesforce_consumerkey"];
        consumersecret = ConfigurationManager.AppSettings["Salesforce_consumersecret"];
        username = ConfigurationManager.AppSettings["Salesforce_user"];
        password = ConfigurationManager.AppSettings["Salesforce_password"];

        AuthenticationClient auth = null;
        Task t = null;

        try
        {
            //create auth client to retrieve token
            auth = new AuthenticationClient();

            //get back URL and token
            t = auth.UsernamePasswordAsync(consumerkey, consumersecret, username, password);
            t.Wait();
        }
        catch (Exception e)
        {
            throw new Exception("Fail to create SF authentication", e);
        }