Ui doesn't update until end of sub or function

Hi,

You can create a async method to make the Button Collapsed:

Private Async Sub ButtonVisible()
        Await btnFire.Visibility = Windows.UI.Xaml.Visibility.Collapsed
End Sub

And then edit your code like below:

Private Async Sub btnFire_Click(sender AsObject, e AsRoutedEventArgs) HandlesbtnFire.Click

        Await ButtonVisible()
        Await funWaitingForopponent()

End Sub

Best Wishes!

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