Often times you want to you need to update a page when you enter it or save information automatically when you leave it.  When you look through the events list on the property page you won’t find an event that occurs at those points in the page lifecycle.  Intellisense is your friend in this case.  The events OnNavigateTo and OnNavigateFrom can be overridden to give your application the required functionality.  Below is a sample signature for OnNavigateTo.

protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)

//TODO: Place your code here for when the page is navigated to