/// <summary>
        /// 延遲調用
        /// </summary>
        /// <param name="method"></param>
        /// <param name="delayTime"></param>
        public static void DelayInvoke(Action method, int delayTime = 2000)
        {
            System.Timers.Timer timer = new System.Timers.Timer(delayTime);
            timer.Elapsed 
 
+= new System.Timers.ElapsedEventHandler((a, b) =>
            {
                method();
            });
            //執行一次 false
            timer.AutoReset = false;
            //是否執行System.Timers.Timer.Elapsed事件  
            timer.Enabled = true;
        }

延遲調用