Solved

VB Script IsNumeric Function and the dollar sign

Posted on 2010-09-23
8
1,673 Views
Last Modified: 2012-05-10
Hi - I have a classic ASP page that uses VBScript and I need some help.  

I have a form that allows a user to enter a budget amount.  I want to insure the value the user enter EXCLUDES the dollar sign ($) and the comma (,).  

Example:

$10,500.00 (False)

10500.00 (True)

I wrote this to test the value entered...

If NOT IsNumeric(strBudget) THEN
  ' message
End If

.... but IsNumeric allows the dollar sign and comma and returns True.  

Is there another function that I could use to test the value entered?  I want to make sure the user isn't entering a dollar sign or a comma.

Thanks.
0
Comment
Question by:cdemott33
8 Comments
 
LVL 92

Expert Comment

by:Patrick Matthews
ID: 33744645
You may want to use Regular Expressions, and test on this pattern:^\d\.?\d*$
0
 
LVL 28

Expert Comment

by:strickdd
ID: 33744659
You will have to check for the existence of the "$" and "," on top of the IsNumeric check. Use the InStr function to do this: http://www.w3schools.com/VBscript/func_instr.asp
0
 
LVL 92

Accepted Solution

by:
Patrick Matthews earned 500 total points
ID: 33744663
For more about using RegExp to validate entries in ASP:http://www.4guysfromrolla.com/webtech/120400-1.shtml
0
 

Author Comment

by:cdemott33
ID: 33744678
matthewspatrick - Can you provide an example of how I could do this?
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 13

Expert Comment

by:samic400
ID: 33744684
If you could use javascript -

script would be this -
function validateNumberField (objEvent)
        {
        var iKeyCode;
            iKeyCode = objEvent.charCode ? objEvent.charCode : objEvent.keyCode;
      if(iKeyCode>=48 && iKeyCode<=57) return true;
        if (iKeyCode == 8) return true;
        return false;
      }

then your code would have something like this:
<input type="text" size=1 name="month" id="month" onKeyPress="return validateNumberField(event);">

and only allow numbers.
0
 
LVL 92

Expert Comment

by:Patrick Matthews
ID: 33744685
>>You will have to check for the existence of the "$" and "," on top of the IsNumeric checkAnd that's not all.  For example, these return true as well:IsNumeric(" 1234")IsNumeric("1234 ")IsNumeric(" 1234 ")RegExp is looking better and better :)
0
 
LVL 92

Expert Comment

by:Patrick Matthews
ID: 33744875
For an example, see:http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/ASP/Q_21591244.htmlNote that you should use the pattern string I supplied in my first comment...
0
 

Author Closing Comment

by:cdemott33
ID: 33744911
Thank you.  Using a regexp match worked perfectly.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Need help to rewrite script 3 64
Index Match Vlook up for a master file 7 58
Compile Error 7 40
Issues with Insert statement 12 8
I was asked about the differences between classic ASP and ASP.NET, so let me put them down here, for reference: Let's make the introductions... Classic ASP was launched by Microsoft in 1998 and dynamically generate web pages upon user interact…
If you need to start windows update installation remotely or as a scheduled task you will find this very helpful.
This video demonstrates how to sync Microsoft Exchange Public Folders with smartphones using CodeTwo Exchange Sync and Exchange ActiveSync. To learn more about CodeTwo Exchange Sync and download the free trial, go to: http://www.codetwo.com/excha…
A simple description of email encryption using a secure portal service. This is one of the choices offered by The Email Laundry for email encryption. The other choices are pdf encryption which creates an encrypted pdf of your email and any attachmen…

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now