c# 定时器线程

	    public static Thread DrawNoticeThread = null;
        /// <summary>
        /// 线程控制器
        /// </summary>
        public static bool ThreadState = true;
	    /// <summary>
        /// 启动渲染公告通知窗体的线程
        /// </summary>
        /// <param name="frm">依托主线程的句柄</param>
        /// <param name="action">当公告通知 窗体关闭时执行,发送通知给服务端,已读</param>
        public static void DrawNoticeThreadStart(Form frm, Action<Guid, string> action)
        {
            if (DrawNoticeThread == null)
            {
                DrawNoticeThread = new Thread(() =>
                {
                    while (true)
                    {
                        //控制线程的开关
                        while (ThreadState)
                        {
                            frm.NewInvoke(() =>
                            {
                                DrawNoticeFrm(action);
                            });
                        }
                    }
                })
                {
	                //随着主进程结束而结束
                    IsBackground = true
                };
                DrawNoticeThread.Start();
            }
        }