public ActionResult Index()
        {
            var boCollection = _Service.GetAll().OrderBy(x => x.Name);
            var vmCollection = new List <AlbumViewModel>();
            var count        = 0;

            foreach (var item in boCollection)
            {
                var vm = new AlbumViewModel();
                vm.MapToModel(item);
                vm.OrderNumber = (++count).ToString();
                vmCollection.Add(vm);
            }
            ViewBag.Title = "专辑";
            return(View(vmCollection));
        }