在wp7中线程休眠后导航到另一个页面(navigate to another page after Thread sleep in wp7)

 我正在制作一个启动画面页面。 这将在启动应用程序时显示。 我将线程设置为睡眠状态。 但我无法将其导航到另一个应用程序的主页面。 我在加载时设置了启动画面页面。 它还显示加载应用程序时。 但问题是我无法导航它。 
 
 这是我的代码。 
 
public partial class WindowsPhoneControl1 : UserControl
{
    public WindowsPhoneControl1()
    {
        InitializeComponent();
        Thread.Sleep(4000);
        {
            NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));        
        }
    }
    }

I am making an splash screen page. That will show on start up of application. I set the thread sleep in it. But i am unable to navigate it to another main page of application. I set the splashscreen page at loading time. It is also showing when app is loaded. But the problem is that i am not able to navigate it.
 
here is my code.
 
public partial class WindowsPhoneControl1 : UserControl
{
    public WindowsPhoneControl1()
    {
        InitializeComponent();
        Thread.Sleep(4000);
        {
            NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));        
        }
    }
    }

原文：https://stackoverflow.com/questions/16539361