CODEWITHSUNDEEP
c#windows-runtimewindows-store-appswinrt-xamlidisposable
Dani
Dani

Reputation: 1047

WinRt: Dispose a page

I'm wondering how to dispose a Page correctly in WinRT.

In my page_loaded event I hook several events like:

_navigationHelper.LoadState += navigationHelper_LoadState;
_navigationHelper.SaveState += navigationHelper_SaveState;
_button.Click += button_click;

As I don't have an instance from my page I can not dispose it. Am I responsible to unhook such events?

Is it right that if the destructor is called everything is disposed and the GC takes care of all references?

Many thanks Dani

Upvotes: 1

Views: 1554

Answers (1)

Filip Skakun
Filip Skakun

Reputation: 31724

If your page doesn't hold references to large resources - it might be fine to just let it be garbage collected. Otherwise you can consider releasing those on the Unloaded event or OnNavigatedFrom() override. The page itself doesn't implement IDisposable, so you can't dispose it and it's likely not what you'd want since a control like Page is not a heavy resource.

Overall - garbage collection takes care of all objects that lose a path to GC root. You just need to make sure you don't cause a leak by leaving such a connection hanging (I'd say most typically by not removing static event handlers). To release larger resources you should implement the IDisposable interface correctly (look up "IDisposable pattern").

Upvotes: 2

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