Life cycle method logic

Hi. I want to ask a few questions about the life cycle methods of Windows Phone App:
the OnNavigatedTo and OnNavigatedFrom, when is that methods called and what method is called when app goes to background, the screen locks(screen saver) and when app resumes? Thank you.

Hi,OnNavigatedTo
this method call after the initialization section.I recommend you load your data asynchronously. OnNavigatedTo is
one place where you can start the loading.
OnNavigatedFrom:- This
method call when application leave the page.OnNavigatedFrom is one place where release application page resources/clean
memory/clean Back stack entry etc.eg-If application running and you press back button/start button then this method call.
Don't
forget to mark the right answer and vote up if helps you.

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