You didn't indicate which platform you're targeting,
however, if it's ASP.NET you can use the
RegularExpressionValidator control. The list of regular
expressions is not in the help for the control so you've
got to search MSDN for that - there's alot of them for
specifying every kind of character/number mask under the
sun.
Good luck.
-----Original Message-----
Dear all,
Does one of you knows an easy way to set for an input
control like text box, a list of invalid characters.
Then if type charecters belonmg to that list will
generatea user message.
thanks for your help
regards
Serge
.