WP7 页面事件触发顺序测试

1、进入页面时

OnNavigatedTo-Loaded

2、离开页面时
OnNavigationFrom
OnNavigatedFrom
UnLoaded

 

总结：

OnNavigatedTo→ Loaded→ OnNavigationFrom→ OnNavigatedFrom→ UnLoaded

 

后台代码：

public partial class About : PhoneApplicationPage
    {
        public About()
        {
            InitializeComponent();
            this.Loaded += new RoutedEventHandler(About_Loaded);
            this.Unloaded += new RoutedEventHandler(About_Unloaded);
        }

        protected override void OnNavigatedFrom(System.Windows.Navigation.NavigationEventArgs e)
        {
                base.OnNavigatedFrom(e);
                MessageBox.Show("我是OnNavigatedFrom");
        }

        protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
        {
               base.OnNavigatedTo(e);
               MessageBox.Show("我是OnNavigatedTo");
        }

        protected override void OnNavigatingFrom(System.Windows.Navigation.NavigatingCancelEventArgs e)
        {
            base.OnNavigatingFrom(e);
            MessageBox.Show("我是OnNavigatingFrom");
        }

        void About_Unloaded(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("我是About_Unloaded");
        }

        void About_Loaded(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("我是loaded");
            //throw new NotImplementedException();
        }
    }