public ActionResult GetByPeriod(string start, string end, int factoryId)
 {
     try
     {
         var stat = StatManager.ByPeriod(start, end, factoryId);
         if (stat != null)
         {
             return(View("~/Views/Stat/_ByPeriod.cshtml", stat));
         }
         else
         {
             throw new Exception("Нет смен в указанном периоде");
         }
     }
     catch (Exception)
     {
         return(RedirectToAction("ShiftError", "Error"));
     }
 }