Question

Here are my two reg expressions. The first one seems to match my case insensitive string exactly, but the second one has a space and isn’t working.

^([wW][eE][eE][kK][5][0][0])$


^([wW][eE][eE][kK][/s][5][0][0])$

So I have two problems:
1) What do I change so that my first reg expression in my asp RegularExpressionValidator will not match my “Week500” case insensitive, entire string? I only want it to fire if this entire string (albeit case insensitive) is matched. Currently this reg expression is doing the opposite of what I need.

2) I also need this same change for my second reg expression in my second asp RegularExpressionValidator. However, it has a space in a specific place in the string “Week 500”.

Here are the complete tags for my two RegularExpressionValidators on my asp page:
<asp:RegularExpressionValidator ID="revPrevEventNameDup" runat="server" ControlToValidate="txtGenerateEventsPreviewEventName" EnableClientScript="true" ErrorMessage="Dup Name" Display="Dynamic" ValidationExpression="^([wW][eE][eE][kK][5][0][0])$" ValidationGroup="GenerateEventsPreviewValidation" />

<asp:RegularExpressionValidator ID="revPrevEventNameDup" runat="server" ControlToValidate="txtGenerateEventsPreviewEventName" EnableClientScript="true" ErrorMessage="Dup Label" Display="Dynamic" ValidationExpression="^([wW][eE][eE][kK][5][0][0])$" ValidationGroup="GenerateEventsPreviewValidation" />

Thank you in advance for your help.

++++++++++++++++++++++++++++++++++++++++++

I’m new so I can’t answer my own question, so it suggested I put the answer here…

Thank you all for the string help!!

You’re all GREAT!!

Here:
ASP.NET RegularExpressionValidator, validate on a non-match?

I found that I had to add:
^(?!

to the front and:
$).*$

to the end to get the validate on a non-match.

So here are my two finial RegularExpressionValidators for my asp page that work GREAT!!

ValidationExpression="^(?!([wW][eE][eE][kK]500)$).*$"

ValidationExpression="^(?!([wW][eE][eE][kK] 500)$).*$"

THANK YOU!!!

Answer 1

The white-space matching regular expression is \s, not /s.

^([wW][eE][eE][kK][\s][5][0][0])$

If all you need is a space, just type it.

^([wW][eE][eE][kK] [5][0][0])$

And, if you want to match a single character, just type those too, unless they are special:

^([wW][eE][eE][kK] 500)$

And in all cases, if \ is special to your string holder, you may need to escape the escape character, using \\.