学步园

<Application.Resources>
        <ControlTemplate x:Name="NewFrameTemplate">
            <Grid x:Name="ClientArea">
                <Grid.RowDefinitions>
                    <RowDefinition Height="*"/>
                    <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>
                <ContentPresenter Grid.Row="0"/>
                <Border Grid.Row="1" BorderBrush="{StaticResource PhoneForegroundBrush}" BorderThickness="{StaticResource PhoneBorderThickness}" Height="300">
                    <Grid x:Name="ContentPanel" Background="{StaticResource PhoneSemitransparentBrush}">
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition />
                            <RowDefinition Height="Auto"/>
                        </Grid.RowDefinitions>
                        <TextBlock  Grid.Row="0" x:Name="CurrentPage" Style="{StaticResource PhoneTextSubtleStyle}" HorizontalAlignment="Center"/>
                        <ListBox Grid.Row="1" ItemsSource="{Binding}" x:Name="HistoryList" 
                                HorizontalAlignment="Center" Height="300">
                            <ListBox.ItemTemplate>
                                <DataTemplate>
                                    <Border BorderBrush="{StaticResource PhoneForegroundBrush}" BorderThickness="{StaticResource PhoneBorderThickness}" Width="300" Margin="5" 
                                            Background="DarkGray" HorizontalAlignment="Center">
                                        <TextBlock Text="{Binding}"/>
                                    </Border>
                                </DataTemplate>
                            </ListBox.ItemTemplate>
                        </ListBox>
                        <StackPanel Grid.Row="2" Orientation="Horizontal" HorizontalAlignment="Center">
                            <Button Content="Pop Last" x:Name="btnPopLast" IsEnabled="false"/>
                            <Button Content="Pop To Selected" x:Name="btnPopToSelected" IsEnabled="false"/>
                        </StackPanel>
                    </Grid>
                </Border>

            </Grid>
        </ControlTemplate>
    </Application.Resources>

using System.Windows.Controls;

// UI controls on the RootFrame template.
ListBox historyListBox;            // ListBox for listing the navigation history
Button popLastButton;              // Button to pop the newest entry from the back stack
Button popToSelectedButton;        // Button to pop all entries in the back stack up to the selected entry
TextBlock currentPageTextBlock;    // TextBlock to display the current page the user is on

using System.Windows.Media;

// Set the template for the RootFrame to the new template you created in the Application.Resources in App.xaml
RootFrame.Template = Resources["NewFrameTemplate"] as ControlTemplate;
RootFrame.ApplyTemplate();

popToSelectedButton = (VisualTreeHelper.GetChild(RootFrame, 0) as FrameworkElement).FindName("btnPopToSelected") as Button;
popToSelectedButton.Click += new RoutedEventHandler(PopToSelectedButton_Click);

popLastButton = (VisualTreeHelper.GetChild(RootFrame, 0) as FrameworkElement).FindName("btnPopLast") as Button;
popLastButton.Click += new RoutedEventHandler(PopLastButton_Click);

currentPageTextBlock = (VisualTreeHelper.GetChild(RootFrame, 0) as FrameworkElement).FindName("CurrentPage") as TextBlock;

historyListBox = (VisualTreeHelper.GetChild(RootFrame, 0) as FrameworkElement).FindName("HistoryList") as ListBox;
historyListBox.SelectionChanged += new SelectionChangedEventHandler(HistoryList_SelectionChanged);

// Update the navigation history listbox whenever a navigation happens in the application
RootFrame.Navigated += delegate { RootFrame.Dispatcher.BeginInvoke(delegate { UpdateHistory(); }); };

/// <summary>
/// Use the BackStack property to refresh the navigation history list box with the latest history.
/// </summary>
void UpdateHistory()
{
   historyListBox.Items.Clear();
   int i = 0;

   foreach (JournalEntry journalEntry in RootFrame)
   {
      historyListBox.Items.Insert(i, journalEntry.Source);
      i++;
   }
   currentPageTextBlock.Text = "[" + RootFrame.Source + "]";
   if (popLastButton != null)
   {
       popLastButton.IsEnabled = (historyListBox.Items.Count > 0);
   }
}

/// <summary>
/// Handle the SelectionChanged event for navigation history list.
/// </summary>
private void HistoryList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
   if (historyListBox != null && popToSelectedButton != null)
   {
       popToSelectedButton.IsEnabled = (historyListBox.SelectedItems.Count > 0) ? true : false;
   }
}

/// <summary>
/// Remove the last entry from the back stack.
/// </summary>
private void PopLastButton_Click(object sender, RoutedEventArgs e)
{

    RootFrame.RemoveBackEntry();

    // Refresh the history list since the back stack has been modified.
    UpdateHistory();
}

/// <summary>
/// Remove all entries from the back stack up to the selected item, but not including it.
/// </summary>
private void PopToSelectedButton_Click(object sender, RoutedEventArgs e)
{
    // Make sure something has been selected.
    if (historyListBox != null && historyListBox.SelectedIndex >= 0)
    {
        for (int i = 0; i < historyListBox.SelectedIndex; i++)
        {
            RootFrame.RemoveBackEntry();
        }
        // Refresh the history list since the back stack has been modified.
        UpdateHistory();
    }
 }

<!--ContentPanel - place additional content here-->
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
    <CheckBox x:Name="PinToStartCheckBox" Content="Pin To Start" IsChecked="False" HorizontalAlignment="Center" 
VerticalAlignment="Center" Click="PinToStartCheckBox_Click"/>
    <Button x:Name="btnNext" Content="Next Page"  Height="80" VerticalAlignment="Bottom" 
Click="btnNext_Click"/>
</Grid>

        <StackPanel Grid.Row="0" Margin="12,17,0,28">
            <TextBlock x:Name="AppName" Text="MY APPLICATION" Style="{StaticResource PhoneTextNormalStyle}"/>
            <TextBlock x:Name="PageTitle" Text="page name" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
        </StackPanel>

// The URI string of the next page to navigate to from this page.
// String.Empty here means that there is no next page.
private string nextPage;

// Set the application title - use the same application title on each page.
AppName.Text = "SDK BACKSTACK SAMPLE";

// Set a unique page title. In this example, you will use "page 1", "page 2", and so on.
PageTitle.Text = "page 1";

// Set the URI string of the next page, or String.Empty if there is no next page.
nextPage = "/Page2.xaml";

protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
   base.OnNavigatedTo(e);
   
   // Show the Next button, if you have defined a next page.
   btnNext.Visibility = (String.IsNullOrWhiteSpace(nextPage)) ? Visibility.Collapsed : Visibility.Visible;

   if (ShellTile.ActiveTiles.FirstOrDefault(o => o.NavigationUri.ToString().Contains(NavigationService.Source.ToString())) == null)
      PinToStartCheckBox.IsChecked = false;
   else
      PinToStartCheckBox.IsChecked = true;
}

/// <summary>
/// Navigate to the next page.
/// </summary>
private void btnNext_Click(object sender, RoutedEventArgs e)
{
     // Make sure to attempt navigation only if you have defined a next page.
     if (!String.IsNullOrWhiteSpace(nextPage))
     {
        this.NavigationService.Navigate(new Uri(nextPage, UriKind.Relative));
     }
}

/// <summary>
/// Toggle pinning a Tile for this page on the Start screen.
/// </summary>
private void PinToStartCheckBox_Click(object sender, RoutedEventArgs e)
{
   // Try to find a Tile that has this page's URI.
   ShellTile tile = ShellTile.ActiveTiles.FirstOrDefault(o => o.NavigationUri.ToString().Contains(NavigationService.Source.ToString()));

   if (tile == null)
   {
      // No Tile was found, so add one for this page.
      StandardTileData tileData = new StandardTileData { Title = PageTitle.Text };
      ShellTile.Create(new Uri(NavigationService.Source.ToString(), UriKind.Relative), tileData);
   }
   else
   {
      // A Tile was found, so remove it.
      tile.Delete();
   }
}