private void DownClick(object sender, RoutedEventArgs e)
{
FrameworkElement ele = sender as FrameworkElement;
if (ele == null)
{
return;
}
var alp = (AlphabetItem)ele.DataContext;
var index = Alphabets.IndexOf(alp);
AlphabetItem tmp = null;
if (ActiveAlphabet == alp)
{
tmp = alp;
}
index--;
if (index > -1)
{
Alphabets.Remove(alp);
Alphabets.Insert(index, alp);
if (tmp != null)
{
ActiveAlphabet = alp;
}
}
AlphabetCollectionView.Refresh();
}