private void MyListBox_MouseWheel(object sender, MouseWheelEventArgs e)
{
if (MyListBox.Items.Count == 0)
{
return;
}
int id = MyListBox.SelectedIndex;
if (e.Delta < 0 && MyListBox.Items.Count > id)
{
MyListBox.SelectedIndex++;
}
else if (e.Delta > 0 && id > 0)
{
MyListBox.SelectedIndex--;
}
else
{
MyListBox.SelectedIndex = 0;
}
MyListBox.ScrollIntoView(MyListBox.Items[MyListBox.SelectedIndex]);
}