public virtual ActionResult AddClass(Class model)
 {
     if (!ModelState.IsValid)
     {
         SetDropDownlist();
         return View(model);
     }
     model.ReBind();
     var result = _classService.AddClass(model);
     if (!result.IsSuccessfull)
     {
         this.NotificationController().Notify(result.Message, NotificationStatus.Error);
         SetDropDownlist();
         return View(model);
     }
     return RedirectToAction(MVC.Class.ActionNames.AddClassTime, MVC.Class.Name, new { classId = result.Result.ToString() });
 }