Question

I am working on an app on wp7.

I hope to prompt a confirmation dialog when user exit app (press back button).

Is it possible?

Welcome any comment

Answer 1

Please handle the BackKeyPress button in the Application page to handle the back key press.

In Page.xaml file in the element add this code

BackKeyPress="PhoneApplicationPage_BackKeyPress"

it should look like

<phone:PhoneApplicationPage BackKeyPress="PhoneApplicationPage_BackKeyPress"
..//other attributes .. >

in event handler you write the code as follows

private void PhoneApplicationPage_BackKeyPress(object sender, System.ComponentModel.CancelEventArgs e)
        {
             MessageBoxResult mb =  MessageBox.Show("You want exit the page", "Alert", MessageBoxButton.OKCancel);

            if( mb != MessageBoxResult.OK)
            {
                e.Cancel = true;
            }

        }