private void Up(object sender, RoutedEventArgs e)
{
int index = Lb_Apps.SelectedIndex;
if (index > 0)
{
Appconf tmp1 = al[index];
Appconf tmp2 = al[index - 1];
al.RemoveAt(index, false);
al.Insert(index, tmp2);
al.RemoveAt(index - 1, false);
al.Insert(index - 1, tmp1);
Lb_Apps.Items.RemoveAt(index);
Lb_Apps.Items.Insert(index, al[index].AppName);
Lb_Apps.Items.RemoveAt(index - 1);
Lb_Apps.Items.Insert(index - 1, al[index - 1].AppName);
Lb_Apps.SelectedIndex = index - 1;
}
}