Solved

How to modify my search pattern code to stop searching after the first occurrence?

Posted on 2015-01-20
5
87 Views
Last Modified: 2015-01-20
My code works great unless it finds multiple matches.

Function Int_Tkt_TWX(strToSearch)
Set oRegEx = CreateObject("vbscript.regexp")
oRegEx.Global = True
oRegEx.IgnoreCase = True
oRegEx.Pattern = "TWX[0-9]{8,}"
Set RegExMatches = oRegEx.Execute(strToSearch)
If RegExMatches.Count = 1 Then
    Int_Tkt_TWX = RegExMatches.Item(0)
Else
    Int_Tkt_TWX = ""
End If
End Function

Open in new window

0
Comment
Question by:kbay808
5 Comments
 
LVL 47

Expert Comment

by:Wayne Taylor (webtubbs)
ID: 40561233
If you want set 'Int_Tkt_TWX' to "" when there are no matches only, use this...

If RegExMatches.Count = 0 Then
    Int_Tkt_TWX = ""
Else
    Int_Tkt_TWX = RegExMatches.Item(0)
End If

Open in new window

0
 
LVL 47

Accepted Solution

by:
Wayne Taylor (webtubbs) earned 500 total points
ID: 40561248
Or perhaps a better option is to test that there is a match....

Function Int_Tkt_TWX(strToSearch)
    Set oRegEx = CreateObject("vbscript.regexp")
    oRegEx.Global = True
    oRegEx.IgnoreCase = True
    oRegEx.Pattern = "TWX[0-9]{8,}"
    If oRegEx.Test(strToSearch) Then
        Set RegExMatches = oRegEx.Execute(strToSearch)
        Int_Tkt_TWX = RegExMatches.Item(0)
    End If
End Function

Open in new window

0
 
LVL 24

Expert Comment

by:mankowitz
ID: 40561250
if you want the regex to stop at the first find, you should set
oRegEx.Global = False
0
 
LVL 23

Expert Comment

by:Michael74
ID: 40561265
If you only want the first match you can also remove the line
oRegEx.Global = True

Open in new window


as the default is false (or set it implicitly if  you want transparency)
https://msdn.microsoft.com/en-us/library/tdte5kwf(v=vs.84).aspx


Then the count value is guaranteed to 1 or 0

Function Int_Tkt_TWX(strToSearch)
    Set regEx = CreateObject("vbscript.regexp")
   
    With regEx
        .Global = False
        .IgnoreCase = True
        .Pattern = "TWX[0-9]{8,}"
    End With
    
    Set RegExMatches = regEx.Execute(strToSearch)
    
    If RegExMatches.Count = 0 Then
        Int_Tkt_TWX = ""
    Else
        Int_Tkt_TWX = RegExMatches.Item(0)
    End If
End Function

Open in new window


Note: It is always a good idea to use with statements
http://xlvba.fr.yuku.com/topic/318/Using-WithEnd-With-statements#.VL8og0eUdAI
0
 

Author Closing Comment

by:kbay808
ID: 40561290
Awesome!!! Thanks
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

Introduction While answering a recent question (http:/Q_27311462.html), I created an alternative function to the Excel Concatenate() function that you might find useful.  I tested several solutions and share the results in this article as well as t…
This tutorial explains how to create a series of drop-down lists that are dependent upon prior selections to guide (“force”) the user to make the correct selection and reduce data errors within Microsoft Excel. Excel 2010 was used for this tutorial;…
Graphs within dashboards are meant to be dynamic, representing data from a period of time that will change each time the dashboard is updated with new data. Rather than update each graph to point to a different set within a static set of data, t…
This Micro Tutorial will demonstrate the scrolling table in Microsoft Excel using the INDEX function.

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

21 Experts available now in Live!

Get 1:1 Help Now