using System;
using System.Text.RegularExpressions;
public class MainClass
{
static void Main( string[] args ) {
// Create regex to search for IP address pattern.
string pattern = @"(?<part1>[01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"\k<part1>\." +
@"\k<part1>\." +
@"\k<part1>";
Regex regex = new Regex( pattern );
Match match = regex.Match( "192.168.169.1" );
while( match.Success ) {
Console.WriteLine( "IP Address found at {0} with " +
"value of {1}",
match.Index,
match.Value );
match = match.NextMatch();
}
}
}
