How to resume the app with another page then the suspended?

See more:

C#

XAML

WinRT

Windows-Phone-8.1

Hi,

I need to ask for a passcode every time the app was suspended (and resumed), so I have to show a corresponding page, and after the user enters the pin proceed the app resuming to the page which was shown before suspending. How can I get the page to which I have to proceed? The App.Resume event provides 2 parameters, but both of them are objects. To which type I need to cast these objects to get the proper page's type? Can I get from these parameters the proper page type at all?

I mean

private void OnResuming(object sender, object e)
{
    //get the suspended page's type here
}

Thanks :)