// SelectedImg
async void RandomImgsListView_ItemSelected(object sender, SelectedItemChangedEventArgs e)
{
int SelectedItemIndex = (RandomImgsListView.ItemsSource as ObservableCollection <Classes.DynamicCollections.RandomImgsDC>).IndexOf(e.SelectedItem as Classes.DynamicCollections.RandomImgsDC);
Page fullImg = new Pages.FullImgPage(SelectedItemIndex, RndFullUrls, RndThumbsUrls);
await Navigation.PushAsync(fullImg);
}
// Selecting Img
async void FavoriteImgsListView_ItemSelected(object sender, SelectedItemChangedEventArgs e)
{
int SelectedItemIndex = (FavoriteImgsListView.ItemsSource as ObservableCollection <Classes.DynamicCollections.FavoritesContainerCollection>).IndexOf(e.SelectedItem as Classes.DynamicCollections.FavoritesContainerCollection);
Page fullImg = new Pages.FullImgPage(SelectedItemIndex, favFull, favThumbs);
await Navigation.PushAsync(fullImg);
}