No controls of .Net gives you this feature right of-the-box (VS 2005 will).

For now, you have to use controls may have done like these:
http://www.codeproject.com/vb/net/validtext3.asp
http://www.thecodeproject.com/vb/net/CpFlexMaskEditBox.asp


>Hi.
>I have a text Box which I want '25AABCDE' to display as '25-AA-BCDE'
>In VFP, this is done using InputMask of : XX-XX-XXXX but I cant
> see anything similar in the Dot Net Properties box .
>
>Any help appreciated.
>
>Regards,
>Gerard