程序最小化至通知区域

       WindowState _wsl;               //状态保存
        NotifyIcon _notifyIcon;         //图标对象

        private void icon()
        {
            _notifyIcon = new NotifyIcon();
            _notifyIcon.BalloonTipText = Properties.Resources.MainWindow_icon_Alf7_ScreenCapture;
            _notifyIcon.Text = Properties.Resources.MainWindow_icon_Alf7_ScreenCapture;
            _notifyIcon.Icon = new Icon("scissor.ico");
            _notifyIcon.Visible = true;
            _notifyIcon.MouseDoubleClick += OnNotifyIconDoubleClick;
            _notifyIcon.ShowBalloonTip(1000);
        }

        private void OnNotifyIconDoubleClick(object sender, EventArgs e)
        {
            Show();
            WindowState = _wsl;
        }

        private void Window_StateChanged(object sender, EventArgs e)
        {
            if (WindowState == WindowState.Minimized)
            {
                Hide();
            }
        }


        private void MainWindow_OnLoaded(object sender, RoutedEventArgs e)
        {
            icon();
            _wsl = WindowState;

        }