自定义panel的双击事件

private DateTime mLastClickTime;
this.mLastClickTime = Convert.ToDateTime("2013-01-01 00:00:00.0000");

private void setPnlMouseDown_Handler(object sender, MouseEventArgs e)
{
    if (e.Button == System.Windows.Forms.MouseButtons.Left)
    {
        TimeSpan s = new TimeSpan();
        s = System.DateTime.Now - mLastClickTime;
        // 毫秒级比较
        if (s.Milliseconds < 500)
        {
            setPnlMouseDoubleClick_Handler(sender, e);
        }
        else
        {
            this.mLastClickTime = DateTime.Now;
        }
    }
}