private async void LoadItemsInListView(string searchString = "")
        {
            bool fromSearch = !string.IsNullOrEmpty(searchString);

            ShowPB(true);

            if (fromSearch)
            {
                var newList = await HostelManager.GetHostelList(searchString);

                //listHostel.DataContext = null;
                listHostel.DataContext    = newList;
                listHostel.FooterTemplate = null;

                btnReset.Visibility = Windows.UI.Xaml.Visibility.Visible;
            }
            else
            {
                var newList = await HostelManager.GetNextHostelItems();

                //listHostel.DataContext = null;
                listHostel.DataContext    = newList;
                listHostel.FooterTemplate = footerTemplate;
            }
            ShowPB(false);
        }
 private async void InitListView()
 {
     listHostel.DataContext = await HostelManager.GetNextHostelItems();
 }