WinForms Form won't close on pressing X or Close() in C#

Question

I\'m having a bit weird problem with WinForm which seems to refuse to close for some weird reason. I\'ve got very simple gui which sometimes doesn\'t react for me pressing X

Answer 1

Paste this code into your form classes:

    protected override void OnFormClosing(FormClosingEventArgs e) {
        e.Cancel = false;
        base.OnFormClosing(e);
    }

When that works, you want to find out why you have Validating event handlers that don't want the form to be closed.

Next thing you want to verify is Debug + Exceptions, tick the Thrown box for CLR Exceptions. This makes sure you don't swallow an exception that prevents a form from closing. Or worse, the operating system swallowing the exception, a nasty Windows 7 problem.