CODEWITHSUNDEEP
c#xamlwindows-phone-8sharpdx
Emiswelt
Emiswelt

Reputation: 4009

Force a page constructor call on windows phone on back navigation

Regarding this question: Is it possible to force a page constructor call on windows phone?

Background:

I am writing a Windows Phone application with DirectX using SharpDX.Toolkit. When navigating back from another page, some re-initialization has to be done. In the provided samples, this is done using the constructor, which works. However, if I place the initialization code into the page loaded event (since the constructor on my page is not called), the initialization does no longer work.

This re-initalization is not needed (and, in fact, introduces bugs into the application), when the navigation is a back navigation from another application or the navigation is induced by a fast app switch. Therefore, overloading the NavigatedTo method is not sufficient.

Upvotes: 0

Views: 607

Answers (1)

Martin Suchan
Martin Suchan

Reputation: 10620

If you want some code to be launched every time user navigates to your page, just override the OnNavigatedTo or OnNavigatedFrom method:

protected override async void OnNavigatedTo(NavigationEventArgs e)
{
    base.OnNavigatedTo(e);
    // this method is called on each navigation to the page
}

protected override void OnNavigatedFrom(NavigationEventArgs e)
{
    base.OnNavigatingFrom(e);
    // this method is called on each navigation from the page
}

Upvotes: 1

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