>Hi!
>
>This is kinda hard to explain.
>Say I have a field with an input mask.
>Allowing my to enter 10 characters.
>
>Eg.. 1234567891
>
>But now I type character 11
>say its a 2
>
>Know the field looks like
>1234567892
>
>It writes over the last character.
>Can I change this behaviour?
>
>i would like it to either type nothing or print an error
>message warning that they are overwriting what they typed..

You might want to try Jim Booth's numeric textbox class in the files download section. It allows input of digits like a calculator display and may have the functionality you're looking for. Otherwise I should think you could test fro the number of digits already entered in the KeyPress event and take appropriate action there.

Bill