FormClosing isn't working?

See more:

C#

Windows

forms

Hey,

I've just started writing an app for a friend of mine and I keep getting a problem and simply can't figure out why.

I have a main form which is a MDI container for a bunch of other forms.

What I'm trying to do is check when a child form is closing and putting a message on screen when that happens. And as such, I've tried putting this code inside the child form, but whatever mode I use to close the form, it simply does nothing.

Any clues? Thank you.

private void av_StatIn_Closing(object sender, FormClosingEventHandler e)
{
 MessageBox.Show("Something");
}