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c#xamltextboxwindows-runtimefocus
Tim Bee
Tim Bee

Reputation: 2230

WinRT, TextBox's focus, weird behavior

in one of my WinRT App's Views, I'd like the BottomAppBar to be displayed when a TextBoxloses focus. I played with the GotFocus and LostFocus events with which I can manually change the IsOpen property of the BottomAppBar accordingly.

Problem is, when the BottomAppBar is open, if the user clicks on the TextBox, the BottomAppBar is closed (standard AppBar behavior), but the TextBox is not focused (even though the user clicked right on it). The user needs to focus the TextBox again to be able to type something again.

If I hook myself up in the Closed event of the BottomAppBar to try and programmatically set the focus to the TextBox, it shortly becomes focused, but loses the focus right away and instead, its ScrollViewer gets focused.

Any idea why the TextBox loses the focus the second time? Any idea how I can do what I'm trying to achieve?

Thanks!

Upvotes: 0

Views: 1164

Answers (1)

Filip Skakun
Filip Skakun

Reputation: 31724

Perhaps your BottomAppBar gets closed when you tap out of it and on the ScrollViewer and setting the focus to your TextBox gets overriden by the focus being set to the ScrollViewer right after that. If you only ever want focus to be on the TextBox - you could disable focus from ScrollViewer. You could also try to set the focus after a delay (either with await Task.Delay(50); or with await Dispatcher.RunAsync(() => /*set focus) so it might get set after the ScrollViewer gets focus or handle GotFocus on the ScrollViewer and set the focus back to the TextBox when you want it to keep the focus. Finally make sure that the TextBox can get focus at all.

Upvotes: 3

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