Regularexpression validator on multiline text box

[Stephan Bour]

Follow up to previous question:
I¹m trying to validate a multipline asp text box that can have a maximum of
150 word characters but any number of white space, carriage returns or tabs.
I tried several regex that pass testing on regexplib.com but fail on the
page
This for example doesn¹t work properly:

ValidationExpression="^\w{1,150}|\s{0,}$"

I get a validation error if any non-word character is added, regardless of
the total length of the string.

I think I'm having a problem because the text box is multiline and the regex
doesn't check it as single line. I have solved that problem before by using
RegexOptions.Singleline in the code behind file but I don't know how to do
that within the asp RegularExpressionValidator tag.
Any idea?
Thanks,
Stephan.

 

[Nicole Calinoiu]

Stephan,

You'll need to allow white space characters before, between, and after your
word characters. Try this instead:

^\s*(\w\s*){1,150}\s*$

HTH,
Nicole

 

[Stephan Bour]

So simple and yet it works so well! Thanks a lot,
Stephan.