public MainWindow()
        {
            InitializeComponent();
            DoubleAnimation da = new DoubleAnimation(0, 1, new Duration(TimeSpan.FromSeconds(0.4)));

            WinCronTab.BeginAnimation(UIElement.OpacityProperty, da);
            InitialTray(); //最小化至托盘
            timer.Tick += new EventHandler(timer_Tick);
            timer.Start();
        }
        private void BtnClose_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            System.Timers.Timer time = new System.Timers.Timer(400);
            time.Elapsed  += new System.Timers.ElapsedEventHandler(MainClose);
            time.AutoReset = false;
            time.Enabled   = true;
            DoubleAnimation da = new DoubleAnimation(1, 0, new Duration(TimeSpan.FromSeconds(0.4)));

            WinCronTab.BeginAnimation(UIElement.OpacityProperty, da);
        }