?
Solved

Test the format of a string

Posted on 2008-09-30
2
Medium Priority
?
182 Views
Last Modified: 2010-04-23
Folks:

In VB.NET, I need to test a string for the following: whether it has any non-numeric characters, or a leading zero.

Good:
1234567
1234
8888853

Bad:
012345
12/3345
234,445
10-23-34-89

TIA!
0
Comment
Question by:crafuse
2 Comments
 
LVL 48

Accepted Solution

by:
Wayne Taylor (webtubbs) earned 1000 total points
ID: 22605176
Hi crafuse,

Try this function....

    Public Function TestNumeric(ByVal num As String) As Boolean
        If num.Substring(0, 1) = "0" Then
            Return False
        Else
            Dim n As Integer = Nothing
            Integer.TryParse(num, n)
            Return n <> Nothing
        End If
    End Function

Regards,

Wayne
0
 

Author Closing Comment

by:crafuse
ID: 31501535
Sweet.

Thanks!
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

This article explains how to create and use a custom WaterMark textbox class.  The custom WaterMark textbox class allows you to set the WaterMark Background Color and WaterMark text at design time.   IMAGE OF WATERMARKS STEPS Create VB …
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…
Is your OST file inaccessible, Need to transfer OST file from one computer to another? Want to convert OST file to PST? If the answer to any of the above question is yes, then look no further. With the help of Stellar OST to PST Converter, you can e…
Suggested Courses

850 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