Solved

How to check if a string contains strictly Letters and/or Numbers (ASP.NET)

Posted on 2004-08-24
5
1,264 Views
Last Modified: 2012-06-27
Hello all,

This should be a simple question.  I would like to do a boolean test to ensure that a string contains letters or numbers or both.  Incase that is not clear, it may not contain any other character other than a letter or number.  Is there such a function in ASP.NET?


Please advise,

-TH
0
Comment
Question by:travishaberman
  • 2
  • 2
5 Comments
 
LVL 19

Expert Comment

by:Desp
ID: 11889661
VB.Net or c#?
0
 

Author Comment

by:travishaberman
ID: 11889680
You know something.. I know this sounds stupid - But I don't even know.. I am fairly decent with C++ and this is my first time ever writing anything in a language like this..  I am working in the ASP "WEB MATRIX" .. Does that help?
0
 
LVL 84

Accepted Solution

by:
ozo earned 50 total points
ID: 11889686
If Not Regex.IsMatch( String, "[^A-Za-z0-9]" ) Then
   
End If
0
 

Author Comment

by:travishaberman
ID: 11889695
Thank you much...!
0
 
LVL 19

Expert Comment

by:Desp
ID: 11889734
its C# at the moment: you can convert it to vb.net

foreach (Char c in s.ToCharArray() )
      {
      if (!Char.IsLetter(c))
           break; // non letter charactar
      }
            
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

Since upgrading to Office 2013 or higher installing the Smart Indenter addin will fail. This article will explain how to install it so it will work regardless of the Office version installed.
Although it can be difficult to imagine, someday your child will have a career of his or her own. He or she will likely start a family, buy a home and start having their own children. So, while being a kid is still extremely important, it’s also …
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
With the power of JIRA, there's an unlimited number of ways you can customize it, use it and benefit from it. With that in mind, there's bound to be things that I wasn't able to cover in this course. With this summary we'll look at some places to go…

895 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

13 Experts available now in Live!

Get 1:1 Help Now