ListBox转移

private void DataMove(ListBox drpLeft, ListBox drpRight)
    {
        //从最大到0为了防止溢出
        for (int i = drpLeft.Items.Count - 1; i >= 0; i--)
        {
            if (drpLeft.Items[i].Selected)
            {
                drpRight.Items.Add(drpLeft.Items[i]);
                drpLeft.Items.RemoveAt(i);
            }
        }
    }