Hi John.

I set up this test code in a windows forms project and it works just fine. The exit takes place everytime regardless of wether I type "1234" or "abcd" in the box and hit the X.

Thanks so much for taking the time to set this up for me. Actually, Viv helped me sort it out. All I had to do was to set e.Cancel = false. Is one method preferred over the other?

But now I noticed some other goofy behavior. My Validating_Number is an event handler for 2 different text boxes on the form. It behaves perfectly for the first text box in the tab order. But the behavior is squirrelly for the second text box, When I tab out of the text box, the validation code does not run. But when I tab back into it, it does! Any ideas about what could be causing this?

Thanks for all the help.