private void SearchBox_QuerySubmitted(AutoSuggestBox sender, AutoSuggestBoxQuerySubmittedEventArgs args)
 {
     if (sender.Text.Length > 0)
     {
         SearchResultPanel.StartSearch(Frame, sender.Text);
     }
 }
 protected override void OnNavigatedTo(NavigationEventArgs e)
 {
     searchtext     = e.Parameter.ToString();
     SearchBox.Text = searchtext;
     SearchResultPanel.StartSearch(Frame, searchtext);
 }