IsValidIP - Validating an IP address [ All Languages » VB.net »  Internet Programming] Total Hit ( 3339) Rate this article:     Poor     Excellent   Submit Your Question/Comment about this article Rating

Click here to copy the following block ' Validate an IP address ' Example: '  MessageBox.Show(IsValidIP("123.14.0.255")) ' => True '  MessageBox.Show(IsValidIP("256.14.0.255")) ' => False Function IsValidIP(ByVal ipAddress As String) As Boolean   Return System.Text.RegularExpressions.Regex.IsMatch(ipAddress, _     "^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}$") End Function

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