>>Thanks for help. so in that case I should write code in my textbox's valid event that if its empty than blank that field. I have a base class so life will
>>be easy for me. but in case if someone does not have base classes so he has to write this in each texbox. i was wondering if is there any other way to achieve this?
>>
>I'm afraid, there is no other way :(

Maybe I misunderstood the question, but shouldn't textbox.Format = "Z" take care of things?

bye