接上篇《》，在做的时候就返现自己习惯性的使用后退键，评论的也说互动性不好，所以今天就弄了下让它支持后退键。

public partial class MainPage : PhoneApplicationPage    {        /// 
        /// 改为一个int计数器或许更好        /// 
        private Stack
    
      broswerHistory;        // Constructor        public MainPage()        {            InitializeComponent();            webBrowser1.Navigated += new EventHandler
     
      (webBrowser1_Navigated);            broswerHistory = new Stack
      
       ();        }        void webBrowser1_Navigated(object sender, System.Windows.Navigation.NavigationEventArgs e)        {            broswerHistory.Push(webBrowser1.Source);        }        protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)        {            webBrowser1.Navigate(new Uri("http://m.oschina.net/", UriKind.Absolute));            base.OnNavigatedTo(e);        }        protected override void OnBackKeyPress(System.ComponentModel.CancelEventArgs e)        {            if (broswerHistory.Count > 1)            {                try                {                    webBrowser1.InvokeScript("eval", "history.go(-1)");                    broswerHistory.Pop();                }                catch (Exception ex)                {                }                finally                {                    e.Cancel = true;                }            }            else            {                MessageBoxResult result = MessageBox.Show(OSChinaResources.Tips_ExitApp, OSChinaResources.Tips_Title, MessageBoxButton.OKCancel);                if (result == MessageBoxResult.Cancel)                {                    e.Cancel = true;                }            }        }    }