I have a TextBox on a form , and on the Leave event I have code to call a MessageBox and am getting some unexpected behaviour.

e.g.

If I have on the Leave event of a textBox: Messagebox.Show("This is a test") , this messagebox displays once.

if I have : MessageBox.Show("This is a test"); followed by This.MyOtherControl.Focus(), the Messagebox fires twice. The fact that I have a Focus seems to be firing the 'Leave' event a second time.

I would need to do this type of thing quite regulalry i.e. on leaving a control, DO SOMETHING and then set focus to another control. Is the 'Leave' event the best time to do this or is there some other way round the Leave event firing twice ?