public ActionResult SleepData()
        {
            SleepDataViewModel sleepDataViewModel = new SleepDataViewModel();
            try
            {
                sleepDataViewModel = new SleepDataHelper().GetViewModel();
                ViewBag.Error = "";
            }
            catch (Exception ex)
            {
                ViewBag.Error = ex.Message;
            }

            return View(sleepDataViewModel);
        }
 public SleepDataHelper()
 {
     sleepDataViewModel = new SleepDataViewModel();
 }