private void LvLocators_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            ListViewItem clickedItem = LvLocators.GetItemAt(e.X, e.Y);

            if (clickedItem != null)
            {
                clickedItem.BeginEdit();
            }
        }
        private void LvLocators_MouseClick(object sender, MouseEventArgs e)
        {
            ListViewItem clickedItem = LvLocators.GetItemAt(e.X, e.Y);

            if (e.Button == MouseButtons.Left)
            {
                if (clickedItem != null)
                {
                    HighlightElement(clickedItem);
                }
            }
            else if (e.Button == MouseButtons.Right)
            {
                delIndex = clickedItem.Index;
                delItem  = clickedItem;
                clickedItem.Remove();
            }
        }