protected async override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (e.Parameter != null)
{
string lcGenreName = e.Parameter.ToString();
_Genre = await ServiceClient.GetGenreAsync(lcGenreName);
updateDisplay();
}
else
{
Frame.GoBack();
}
}
private async void updateDisplay()
{
_Genre = await ServiceClient.GetGenreAsync(_Genre.genreName);
int lcSelectedIndex = 0;
if (lstBooks.SelectedIndex != -1)
{
lcSelectedIndex = lstBooks.SelectedIndex;
}
lstBooks.ItemsSource = null;
if (_Genre.BooksList.Count != 0)
{
_Genre.BooksList.Sort(_Comparer);
lstBooks.ItemsSource = _Genre.BooksList;
}
else
{
lstBooks.Items.Add("No Books Avaliable.");
}
txtbGenre.Text = _Genre.genreName;
if (lcSelectedIndex != 0)
{
try
{
lstBooks.SelectedIndex = lcSelectedIndex;
}
catch
{
lstBooks.SelectedIndex = 0;
}
}
else
{
lstBooks.SelectedIndex = 0;
}
}