第一个页面：
前台

<Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
<Button Content="第一页面" Margin="69,60,0,0" Click="Button_Click_1"/>
< Grid>

后台

private void Button_Click_1(object Sender,RoutedEventArgs e)
{
  Frame.Navigate(typeof(另一页面));
}

另一个页面：
前台

<Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
<TextBlock Text="我是另一页" Margin="69,60,0,0"/>
<Button Content="返回第一页面" Margin="69,60,0,0" Click="Button_Click_1"/>
< Grid>

后台

private void Button_Click_1(object Sender,RoutedEventArgs e)
{
  Frame.GoBack();
}

Protected override void OnNavigatedTo(NavigationEventArgs e)
{
  MessageDialog mes=new MessageDialog(e.Parameter.ToString());
  mes.ShowAsync();
}

WindowsStore页面导航