Question

In my Windows Phone Application when I press a button for navigating to Page1 and before it finishes loading it, I press button to navigate to Page2, my application crashes. Is it correct and what is the best practice to implement this behaviour?

Update
Generally I think, the best way for me will be to block all buttons on the screen after one of them was pressed and make them active after navigation finish, so how can I do this?

Answer 1

The best practice is this case is to disable the Click event after the first click.
If your button was named b and you either assigned event handler in xaml or in codebehind
like

b.Click += new RoutedEventHandler(ButtonOnClick);

void ButtonOnClick(object sender, RoutedEventArgs e)
{
    b.Click -= new RoutedEventHandler(ButtonOnClick);

    // Navigate away now.
}

Actually my sample will stop double click on current button only but you can disable other buttons as well.

in one of my apps, i maintain a List which i iterate and show / hide, enable / disable a required. all you do is iterate and set the correct property.

foreach(var button in myButtons)
    button.IsEnabled = false;