public ActionResult Search(string action_filter, string action_name)
        {
            _viewModelBook = new DemandsForBookViewModel();
            _viewModelBook.DemandsForBooks = _dispacher.ExecuteCommand<IBookAppService, List<DemandsForBook>>(service => service.GetAllDemandsForBookByStudent(((Student)GlobalManager.UserCurrent).Id));

            return PartialView("_AjaxSearchDemandsForBookList", _viewModelBook);
        }
 // GET: Library
 public ActionResult Index()
 {
     _viewModelBook = new DemandsForBookViewModel();
     _viewModelBook.DemandsForBooks = _dispacher.ExecuteCommand<IBookAppService, List<DemandsForBook>>(service => service.GetAllDemandsForBookByStudent(((Student)GlobalManager.UserCurrent).Id));
     return View(_viewModelBook);
 }