Back button on WP8.1

Question

I try to add code to Hardware Back Button on WP8.1

Private Sub onBackPressed(sender As Object, e As BackPressedEventArgs)

    some code

End Sub

But when I press Back - my app just closes. onBackPressed event is not happening at all, how can I fixed it?

Answer 1

Did you register for that event? You need to first add this youself

HardwareButtons.BackPressed += HardwareButtons_BackPressed; ( sorry c# )

cfr http://invokeit.wordpress.com/2014/04/14/backbutton-handling-with-winprt-and-windows-phone-8-1-wpdev/

Answer 2

I know that for C# its easy. Add this to the constructor:

HardwareButtons.BackPressed += this.Hardware_BackButton_Pressed;

And use:

    public void Hardware_BackButton_Pressed(object sender, BackPressedEventArgs e)
    {
        // do things here..
    }