private void lstItem_DownClick(object sender, UpDownEvent e) { int idx = findItemIdx((int)e.tag); if (idx < 0 || idx >= serverItem.Count - 1) { return; } switchItem(idx, idx + 1); }
private void lstItem_UpClick(object sender, UpDownEvent e) { int idx = findItemIdx((int)e.tag); if (idx <= 0) { return; } switchItem(idx - 1, idx); }