Windows 8 Splash screen sample, ใส่ dummy ProgressRing บน TextBlock จำลองการโหลด 1. หยุดไป 5 วินาทีให้เหมือนว่าโหลดอะไรบางอย่าง 2. ผมจำลองการโหลดข้อมูลนานๆ (คล้ายๆการ Thread.Sleep() บน .NET) เมื่อเสร็จแล้วเราก็ให้ไปโหลด MainPage โดยใช้ CoreDispatcher

SplashScreen.xaml

<StackPanel Grid.Row="1" HorizontalAlignment="Center">
    <ProgressRing Name="loadingSomething" IsActive="True" />
    <TextBlock Style="{StaticResource BasicTextStyle}" TextWrapping="Wrap" TextAlignment="Center" Padding="5" HorizontalAlignment="Center">
        The splash screen was dismissed and the image above was positioned using the splash screen API.
    </TextBlock>
    <Button x:Name="LearnMoreButton" Content="Learn More" HorizontalAlignment="Center" />        
</StackPanel>

SplashScreen.xaml.cs

// Include code to be executed when the system has transitioned from the splash screen to the extended splash screen (application's first view).
void DismissedEventHandler(SplashScreen sender, object e)
{
    dismissed = true;
    
    // Navigate away from the app's extended splash screen after completing setup operations here...
    // This sample navigates away from the extended splash screen when the "Learn More" button is clicked.
    
    // Need dispatcher to inject code to UI thread
    var dispatcher = rootFrame.Dispatcher;    
 
    // start loading
    dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => 
    {
        loadingSomething.IsActive = true;                
    });
 
    // load something for 5 seconds
    new System.Threading.ManualResetEvent(false).WaitOne(5000);
 
    // load end and navigate to MainPage
    dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
    {
        rootFrame.Navigate(typeof(MainPage));
        Window.Current.Content = rootFrame;
    });
 
}