Asking for confirmation when “X” button is clicked

Question

The problem is that the messagebox with \"sure you wanna close?\" does pop up, but when I click \"no\", it still proceeds to close the program. Any suggestions? Here\'s my c

Answer 1

e.Cancel on the FormClosing event will stop the closing process

    protected override void OnFormClosing(FormClosingEventArgs e)
    {
        if (CloseCancel()==false)
        {
            e.Cancel = true;
        };
    }

    public static bool CloseCancel()
    {
        const string message = "Are you sure that you would like to cancel the installer?";
        const string caption = "Cancel Installer";
        var result = MessageBox.Show(message, caption,
                                     MessageBoxButtons.YesNo,
                                     MessageBoxIcon.Question);

        if (result == DialogResult.Yes)
            return true;
        else
            return false;
    }