当用户单击链接时，将触发导航事件.在事件处理程序中，您可以取消导航并在默认浏览器中启动相同的Uri.

When the user clicks on a link, a Navigating event will trigger. In the event handler, you can cancel the navigation and launch the same Uri in the default browser.

        webBrowser.Navigating += webBrowser_Navigating;

        ...

        void webBrowser_Navigating(object sender, NavigatingEventArgs e)
        {
            e.Cancel = true;
            WebBrowserTask browserTask = new WebBrowserTask();
            browserTask.Uri = e.Uri;
            browserTask.Show();
        }