CODEWITHSUNDEEP
c#wpfxaml
user3283415
user3283415

Reputation: 119

WPF Program shutdown with prompt

I wrote this code to handle the shutdown of the program/window when I press the Exit-Button:

private void MIExit_Click(object sender, RoutedEventArgs e)
    {
        var close = MessageBox.Show("Do you want to close the programm?", "", MessageBoxButton.YesNo);
        if (close == MessageBoxResult.No)
            return;
        else
            Application.Current.Shutdown();
    }

The problem is I have to press "yes" twice for the application to close and I don`t understand why.

Thank you, Filippo

Upvotes: 0

Views: 99

Answers (3)

user3283415
user3283415

Reputation: 119

ok sorry... I know why. I handled this for the "X" symbol top right on the window:

private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
    {
        var close = MessageBox.Show("Do you want to close the programm?", "", MessageBoxButton.YesNo);
        if (close == MessageBoxResult.No)
            e.Cancel = true;
        else
            e.Cancel = false;
    }

and obviously the messageBox appears two times...

Upvotes: 1

d.moncada
d.moncada

Reputation: 17402

Are you possibly subscribing to the event twice? I would first handle the event so it doesn't bubble up, then add a simple flag so that your MessageBox does not get called twice.

private bool _shuttingDown;
private void MIExit_Click(object sender, RoutedEventArgs e)
{
    e.Handled = true;

    if (_shuttingDown) return;
    _shuttingDown = true;

    var close = MessageBox.Show("Do you want to close the programm?", "", MessageBoxButton.YesNo);
    if (close == MessageBoxResult.No) 
    {
        _shuttingDown = false;
        return;
    }

    Application.Current.Shutdown();     
}

Upvotes: 0

ozzy123lel
ozzy123lel

Reputation: 41

There is no problem in your Code you posted.
Probably you have somewhere else a mistake.

I tried it like this:
Xaml:
<Button Click="MIExit_click">Exit</Button>

C#: 

private void MIExit_click(object sender, RoutedEventArgs e)
{
    if (MessageBox.Show("close?", "", MessageBoxButton.YesNo) == MessageBoxResult.Yes)
        Application.Current.Shutdown();
    else return;
}

Works fine.

Upvotes: 0

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