Solved

RegEx

Posted on 2008-06-19
2
225 Views
Last Modified: 2010-04-23
How can I use Reg Expression to check a line if contain an IP address?
0
Comment
Question by:VBdotnet2005
2 Comments
 
LVL 7

Assisted Solution

by:DarkHill
DarkHill earned 100 total points
ID: 21828785
Got this off the xenocafe.com site, let me know if it works for you:

Private Function isIP(ByVal ip As String) As Boolean
    Dim regex As New RegularExpressions.Regex("^(?:(?:25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)(?(\.?\d)\.)){4}$")
    Return regex.IsMatch(ip)
End Function
0
 
LVL 27

Accepted Solution

by:
planocz earned 150 total points
ID: 21832090
darkhill  has it.
but this looks better.
Imports System.Text.RegularExpressions

 Private Function isIP(ByVal ip As String) As Boolean
        ' Return true if ip is in valid ip address format.
        Return Regex.IsMatch(ip, ("^(?:(?:25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)(?(\.?\d)\.)){4}$"))
    End Function
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering 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

Suggested Solutions

Since .Net 2.0, Visual Basic has made it easy to create a splash screen and set it via the "Splash Screen" drop down in the Project Properties.  A splash screen set in this manner is automatically created, displayed and closed by the framework itsel…
Microsoft Reports are based on a report definition, which is an XML file that describes data and layout for the report, with a different extension. You can create a client-side report definition language (*.rdlc) file with Visual Studio, and build g…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…

856 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