access element in parent page of user control

//access element in parent page of user control


//this is from usercontrol codebehind
private void About_Tapped(object sender, TappedRoutedEventArgs e)
{
    if (rootFrame.CurrentSourcePageType == typeof(HomePage))
            {
                var homePage = rootFrame.Content as HomePage;
                homePage.ucAbout.sbShowAbout.Begin();
            }
}