WPF沒有自帶的通知欄圖示元件，需要引用Windows類庫，具體程式碼如下：

        public MainWindow()
        {
            InitializeComponent();
            icon();
            wsl = WindowState.Minimized;
        }
#region 通知欄

            WindowState wsl;
            System.Windows.Forms.NotifyIcon notifyIcon = null;
        
            private void icon()
            {
                this.notifyIcon = new System.Windows.Forms.NotifyIcon();
                this.notifyIcon.BalloonTipText = "ECMS 服務正在執行..."; //設定程式啟動時顯示的文字
                this.notifyIcon.Text = "ECMS 服務";//最小化到托盤時，滑鼠點選時顯示的文字
                this.notifyIcon.Icon = new System.Drawing.Icon("./logo_48X48.ico");//程式圖示
                this.notifyIcon.Visible = true;

                //右鍵選單--開啟選單項
                System.Windows.Forms.MenuItem open = new System.Windows.Forms.MenuItem("Open");
                open.Click += new EventHandler(ShowWindow);
                //右鍵選單--退出選單項
                System.Windows.Forms.MenuItem exit = new System.Windows.Forms.MenuItem("Exit");
                exit.Click += new EventHandler(CloseWindow);
                //關聯托盤控制元件
                System.Windows.Forms.MenuItem[] childen = new System.Windows.Forms.MenuItem[] { open, exit };
                notifyIcon.ContextMenu = new System.Windows.Forms.ContextMenu(childen);

                notifyIcon.MouseDoubleClick += OnNotifyIconDoubleClick;
                this.notifyIcon.ShowBalloonTip(1000);
            }

            private void OnNotifyIconDoubleClick(object sender, EventArgs e)
            {
                /*
                 * 這一段程式碼需要解釋一下:
                 * 視窗正常時雙擊圖示執行這段程式碼是這樣一個過程：
                 * this.Show()-->WindowState由Normail變為Minimized-->Window_StateChanged事件執行(this.Hide())-->WindowState由Minimized變為Normal-->視窗隱藏
                 * 視窗隱藏時雙擊圖示執行這段程式碼是這樣一個過程：
                 * this.Show()-->WindowState由Normail變為Minimized-->WindowState由Minimized變為Normal-->視窗顯示
                 */
                this.Show();
                this.WindowState = WindowState.Minimized;
                this.WindowState = WindowState.Normal;
            }

            private void Window_StateChanged(object sender, EventArgs e)
            {
                //視窗最小化時隱藏工作列圖示
                 if (WindowState == WindowState.Minimized)
                {
                    this.Hide();
                }
            }

            private void ShowWindow(object sender, EventArgs e)
            {
                this.Visibility = System.Windows.Visibility.Visible;
                this.ShowInTaskbar = true;
                this.Activate();
            }

            private void HideWindow(object sender, EventArgs e)
            {
                this.ShowInTaskbar = false;
                this.Visibility = System.Windows.Visibility.Hidden;
            }

            private void CloseWindow(object sender, EventArgs e)
            {
                System.Windows.Application.Current.Shutdown();
            }

        #endregion