private void listBox_lv1_SelectedIndexChanged(object sender, EventArgs e) { if (listBox_lv1.SelectedIndex != -1) { consMgr.setAPLv2(listBox_lv2, int.Parse(((PermissibleValueObj)(listBox_lv1.SelectedItem)).Value)); if (listBox_lv2.Items.Count == 1) { listBox_lv2.SelectedIndex = 0; } } }