Thank you for contacting us.
From the provided information I can not completely understand what is your scenario. I have attached a sample project that demonstrates how to play different animations depending on whether the user navigates to a new page or goes back. I have used the Page.OnNavigatedTo() method where depending on the NavigationEventArgs.NavigationMode I create proper animation for the page. If this is not your scenario, could you please elaborate a bit more on what exactly you wish to accomplish or you can send us a sample project.
I hope this helps. Please, let us know if you have further questions.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.