in addition there is also an isnumeric(yourstring) function
but a zip code dousnt have to be all numbers so watch out w that one
eric
"Herfried K. Wagner [MVP]" <hirf-spam-me-here@gmx.at> wrote in message
news:bqj41f$1vu2c0$3@ID-208219.news.uni-berlin.de...[color=blue]
> * "Andrea" <andreadecker@fairisaac.com> scripsit:[color=green]
> > If anyone has a simple routine to validate that text
> > entered in a text box control contains only numbers (zip
> > code) or only alpha characters (name), can you please send
> > me? I'm new to this, and am not looking in the right
> > places to find answers.[/color]
>
> You can use 'Double.TryParse' to check if the user entered a valid
> number into the textbox. For more complex formats, you may want to use
> a MaskEdit control:
>
> FlexMaskEditBox - a masked edit control
> <http://www.codeproject.com/vb/net/cpflexmaskeditbox.asp>
>
> Validation can be done with regular expressions too
> ('System.Text.RegularExpression.Regex').
>
> --
> Herfried K. Wagner [MVP]
> <http://www.mvps.org/dotnet>[/color]
