private async void UploadPage_Loaded(object sender, RoutedEventArgs e)
{
// The ViewModel may display a ContentDialog for choosing the category,
// and we need to do this after this page is fully loaded, otherwise
// we can get some layout issues where the commandbar will be visible while
// contentdialog is active.
if (_navigatedToArgs is UploadViewModelArgs)
{
await _viewModel.LoadState((UploadViewModelArgs)_navigatedToArgs);
}
else if (_navigatedToArgs is UploadViewModelEditPhotoArgs)
{
await _viewModel.LoadState((UploadViewModelEditPhotoArgs)_navigatedToArgs);
}
}
