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Shinare
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Joined: 17 Mar 2004
Posts: 13332
Location: Up your butt with a coconut!!

Need regular expression help!

I need to validate a field in a form entry from a website in vb on the back end and I'm trying to use a regular expression. I want to make sure that only letters, numbers and commas are used in the text box. I use:

Code




<%@ Import Namespace="System.Text.RegularExpressions" %>





...





<script language="VB" runat="server">


        Sub btnSearch_OnClick(ByVal sender As Object, ByVal e As EventArgs)





...


Dim pattern as String = "[\,\w]"


strSearch = txtSearch.Text


Dim SearchStringMatch As Match = Regex.Match(strSearch, pattern)





...





      If Not SearchStringMatch.Success Then


         Label1.Text = "Invalid Characters found in search string."


         Exit Sub


      End If





...

For some reason its saying ANYTHING I type in is valid, no matter what characters I use. Sad

I'm not very good at this regular expression stuff, anyone has help for me?
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Fri Oct 28, 2011 5:12 pm

Menos
Broke My Labia

Joined: 06 Jun 2003
Posts: 1125
Location: Oklahoma City

I hate regex. Mostly because I'm no good at it Smile But, I'm thinking your pattern will match if there is ANY character that matches. So if you had the string B*tch it would match success on the 'B' and be done.

Fri Oct 28, 2011 7:23 pm

Sevnn
Candy Cane King

Joined: 22 Mar 2003
Posts: 7711
Location: Kyrat

Some people, when confronted with a problem, think "I know, I'll use regular expressions." Now they have two problems.

Change your regex expression to this: ^[a-zA-Z0-9,]+$

Fri Oct 28, 2011 11:20 pm

Shinare
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Joined: 17 Mar 2004
Posts: 13332
Location: Up your butt with a coconut!!

Sevnn wrote:
Some people, when confronted with a problem, think "I know, I'll use regular expressions." Now they have two problems.

Change your regex expression to this: ^[a-zA-Z0-9,]+$

LOL your quote is so true.. hehe I'm going to have to remember that! Thanks Sevnn, I'll give that a try on Monday. Smile

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Sun Oct 30, 2011 8:54 pm

Brules
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Joined: 23 Mar 2003
Posts: 11074
Location: Konnichiwa, bitches.

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Sun Oct 30, 2011 8:55 pm

Drix
SEAT #ASS 10

Joined: 18 Aug 2004
Posts: 1773
Location: Norman

Brules wrote: "be different be yourself express yourself

...learn to use a fucking comma?? Twisted Evil

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Mon Oct 31, 2011 4:06 am

Brules
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Joined: 23 Mar 2003
Posts: 11074
Location: Konnichiwa, bitches.

Your sand is getting crusty.....

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Mon Oct 31, 2011 8:28 am

Shinare
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Joined: 17 Mar 2004
Posts: 13332
Location: Up your butt with a coconut!!

That expression worked Sevnn! Thanks, I forgot to mention I needed spaces as well so I just added "\s" after the comma and that seems to have done the trick! Muchos Grassy-ass! Smile
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Mon Oct 31, 2011 9:40 am

Brules
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Joined: 23 Mar 2003
Posts: 11074
Location: Konnichiwa, bitches.

Glad I could help Shinare! Smile
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Mon Oct 31, 2011 11:10 am

Sevnn
Candy Cane King

Joined: 22 Mar 2003
Posts: 7711
Location: Kyrat

Glad it helped Shinare.

Tue Nov 01, 2011 12:05 am

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