/// <summary>
        /// ToolStripButton 有設定 CheckOnClick 屬性為 true 的按鈕們,當 任一按鈕 Checked 時,其他按鈕 unChecked
        /// </summary>
        /// <param name="sender"></param>
        public static void SetSingleToolStripButtonOn(ToolStripButton btn, ToolStripButton[] excludeButtons)
        {
            if (btn.Checked)
            {
                var checkOnClickItems = btn.GetCurrentParent().Items.OfType<ToolStripButton>()
                                        .Where(p => p.CheckOnClick == true && !p.Equals(btn));
                if(excludeButtons != null)
                {
                    checkOnClickItems = checkOnClickItems.Where(p => !excludeButtons.Contains(p));
                }

                foreach (ToolStripButton checkOnClickToolStrip in checkOnClickItems)
                {
                    checkOnClickToolStrip.Checked = false;
                }
            }
        }