private void listBox_lv2_SelectedIndexChanged(object sender, EventArgs e)
{
if (listBox_lv1.SelectedIndex != -1 && listBox_lv2.SelectedIndex != -1)
{
consMgr.setAPLv3(listBox_lv3, int.Parse(((PermissibleValueObj)(listBox_lv1.SelectedItem)).Value), int.Parse(((PermissibleValueObj)(listBox_lv2.SelectedItem)).Value));
}
}
