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POHow to create a dialog like CameraCaptureUI.CaptureFileAsync?
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12508678
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12524275
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3
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2012-09-20T08:20:54.150
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2014-02-12T21:31:15.623
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I would like to create a library behaving like the <a href="http://msdn.microsoft.com/en-us/library/windows/apps/windows.media.capture.cameracaptureui.capturefileasync.aspx" rel="nofollow">CaptureFileAsync</a> method, i.e. on a method call it would open up a full screen page with standard back navigation and return result to the caller. I want to be able to call it the same way CaptureFileAsync is called: <pre><code>var dialog = new Library.Dialog(); var result = await dialog.Show(); </code></pre> In the <code>Show</code> method I'm currently navigating to my own page and returning a <code>Task</code> which can be awaited by the caller: <pre><code>public Task<string> Show() { var task = new Task<string>(() => result); var frame = ((Window.Current.Content) as Frame); frame.Navigate(typeof(DialogPage)); return task; } </code></pre> I call <code>task.Start()</code> when the dialog is being closed (either cancelled by navigating back or confirmed by pressing a button) which causes the result to be returned to the awaiting caller. The problem is that when <code>Frame.GoBack()</code> is called, a new instance of the previous page is created and the result gets returned to the old instance which is not displayed any more. This is not how <code>CaptureFileAsync</code> works: in its case the same instance of the calling page is kept. My question is: how can I display a page from my library without affecting the frame navigation and inadvertently causing a new instance of the calling page to be created?
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<windows-8><windows-runtime><winrt-xaml>
Title
How to create a dialog like CameraCaptureUI.CaptureFileAsync?
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1. USDamir Arh
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