private void CommandText_PreviewKeyDown(object sender, KeyEventArgs e)
{
var count = CommandsList.ItemContainerGenerator.Items.Count;
if (count == 0)
{
return;
}
var delta = 0;
if (e.Key == Key.Up)
{
delta = -1; e.Handled = true;
}
if (e.Key == Key.Down)
{
delta = 1; e.Handled = true;
}
CommandsList.SelectedIndex = (CommandsList.SelectedIndex + delta + count) % count;
CommandsList.ScrollIntoView(CommandsList.SelectedItem);
}
