Solved

How to use the like operator with special characters.

Posted on 2013-06-02
5
682 Views
Last Modified: 2013-06-02
I am trying to use the Like operator in VB.net to check to see if the following characters exist within a string:

"(", "[", "{", ")", "]", "}"

The problem is that VB.net uses brackets "[]" to group a series of characters, and brackets are one of the characters that I am looking for in my string.

What is the syntax that I must use to successfully check for the above group of character's in my string including brackets?


Thank you in advance for your time.
0
Comment
Question by:NevSoFly
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 38

Assisted Solution

by:Jim P.
Jim P. earned 200 total points
ID: 39214260
For square brackets try:
like "*" & Chr(91) & "*" & Chr(93) & "*" &

Open in new window


For squiggly brackets try:
like "*" & Chr(123) & "*" & Chr(125) & "*" &

Open in new window


Here's an ASCII table.
0
 
LVL 15

Expert Comment

by:ChloesDad
ID: 39214470
To match the special characters left bracket ([), question mark (?), number sign (#), and asterisk (*), enclose them in square brackets. The right bracket (]) cannot be used within a group to match itself, but it can be used outside a group as an individual character.

eg [[], [?]. [#] and [*]
0
 

Author Comment

by:NevSoFly
ID: 39214512
I read the Microsoft example too, but was having a hard time visualizing the syntax.  So if I included the right bracket would look something like [[({)}] []] ?
0
 
LVL 38

Expert Comment

by:Jim P.
ID: 39214523
When you do it using the Chr function it is handled as a literal value and not as a special character that has to be escaped.
0
 
LVL 15

Accepted Solution

by:
ChloesDad earned 300 total points
ID: 39214540
The right bracket is not allowed in this context

to search for either of the 6 brackets it would look like this I have added spaces for visual effect


* [   (  [[]  {  )  }  ] *

to then find a ] you would do a new LIKE *]*

so the overall logic would be

IF string LIKE "*[([[]{)}]*" OR string LIKE "*]*"
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

1.0 - Introduction Converting Visual Basic 6.0 (VB6) to Visual Basic 2008+ (VB.NET). If ever there was a subject full of murkiness and bad decisions, it is this one!   The first problem seems to be that people considering this task of converting…
Parsing a CSV file is a task that we are confronted with regularly, and although there are a vast number of means to do this, as a newbie, the field can be confusing and the tools can seem complex. A simple solution to parsing a customized CSV fi…
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …

627 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