/* * Page - Page（担任自 UserControl, 请参见 /Controls/BaseControl/UserControlDemo/） * TopAppBar, BottomAppBar - 参见 /Controls/NavigationControl/AppBarDemo.xaml 和 /Controls/NavigationControl/CommandBarDemo.xaml * NavigationCacheMode, OnNavigatedFrom(), OnNavigatingFrom(), OnNavigatingFrom() - 参见 /Controls/NavigationControl/FrameDemo.xaml * Frame - 获取当前 Page 的所属 Frame */ using System; using System.Diagnostics; using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; using Windows.UI.Xaml.Navigation; namespace Windows10.Controls.BaseControl.PageDemo { public sealed partial class PageDemo : Page { public PageDemo() { this.InitializeComponent(); this.Loading += page_Loading; this.Loaded += page_Loaded; this.Unloaded += page_Unloaded; } // 在 OnNavigatedTo 之后，由外到内触发 Loading 事件，由内到外触发 Loaded 事件；在 OnNavigatedFrom 之后，由外到内触发 Unloaded 事件（参见 /Controls/BaseControl/FrameworkElementDemo/Demo2.xaml.cs） protected override void OnNavigatedTo(NavigationEventArgs e) { lblMsg.Text += "OnNavigatedTo"; lblMsg.Text += Environment.NewLine; } protected override void OnNavigatingFrom(NavigatingCancelEventArgs e) { Debug.WriteLine("OnNavigatingFrom"); } protected override void OnNavigatedFrom(NavigationEventArgs e) { Debug.WriteLine("OnNavigatedFrom"); } // 在 OnNavigatedTo 之后，由外到内触发 Loading 事件，由内到外触发 Loaded 事件；在 OnNavigatedFrom 之后，由外到内触发 Unloaded 事件（参见 /Controls/BaseControl/FrameworkElementDemo/Demo2.xaml.cs） private void page_Loading(FrameworkElement sender, object args) { lblMsg.Text += "page_Loading"; lblMsg.Text += Environment.NewLine; } private void page_Loaded(object sender, RoutedEventArgs e) { lblMsg.Text += "page_Loaded"; lblMsg.Text += Environment.NewLine; } private void page_Unloaded(object sender, RoutedEventArgs e) { Debug.WriteLine("page_Unloaded"); } } }
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