c# - Windows Phone 7 Development Delay on Buttons -

i have created button in c# windows phone 7 development. contains animation , when clicked want animation shown, , button navigate next page.

using thread.sleep(4000) crashes application , wondering how go this.

is there way delay navigate code?

private void batnballbtn_click(object sender, routedeventargs e) {     navigationservice.navigate(new uri("/picturegame.xaml", urikind.relative)); } 

presumably animation storyboard. can navigate within storyboard's completed event.

mystoryboard.completed += (s, e) => {     mystoryboard.stop();             navigationservice.navigate(new uri("/picturegame.xaml", urikind.relative)); }; 

this way don't need predict how long animation take, making code more reusable, , don't have worry dealing multiple threads manually.