WPF最小到系统托盘

让WPF应用最小到系统托盘？可以调用System.Windows.Forms.NotifyIcon来实现，下面是示例代码：

public partial class MainWindow : Window
    {
        private NotifyIcon notifyIcon;
        public MainWindow()
        {
            InitializeComponent();

            this.notifyIcon = new NotifyIcon();
            this.notifyIcon.BalloonTipText = "系统监控中... ...";
            this.notifyIcon.ShowBalloonTip(2000);
            this.notifyIcon.Text = "系统监控中... ...";
            this.notifyIcon.Icon = new System.Drawing.Icon(@"AppIcon.ico");
            this.notifyIcon.Visible = true;
            //打开菜单项
            System.Windows.Forms.MenuItem open = new System.Windows.Forms.MenuItem("Open");
            open.Click += new EventHandler(Show);
            //退出菜单项
            System.Windows.Forms.MenuItem exit = new System.Windows.Forms.MenuItem("Exit");
            exit.Click += new EventHandler(Close);
            //关联托盘控件
            System.Windows.Forms.MenuItem[] childen = new System.Windows.Forms.MenuItem[] { open, exit };
            notifyIcon.ContextMenu = new System.Windows.Forms.ContextMenu(childen);

            this.notifyIcon.MouseDoubleClick += new System.Windows.Forms.MouseEventHandler((o, e) =>
            {
                if (e.Button == MouseButtons.Left) this.Show(o, e);
            });
        }

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

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

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

运行时发现，程序一定要能找到ICON，否则会报错，并且ICON还没包含到程序中，需要一个额外的ICON来做托盘图标。当然这个都是能解决的：

this.notifyIcon.Icon = new System.Drawing.Icon(@"AppIcon.ico");

将以上一句替换成下面内容，意思就是读取程序图标，来作为托盘图标

this.notifyIcon.Icon = System.Drawing.Icon.ExtractAssociatedIcon(System.Windows.Forms.Application.ExecutablePath);

运行，搞定，这样你的程序就不用拖着一个ICON文件当累赘了。