using System;
using System.Text;
using System.Text.RegularExpressions;

public class EntryPoint
{
    static void Main( string[] args ) {

        // Create regex to search for IP address pattern.
        string pattern = @"(?<part1>[01]?dd?|2[0-4]d|25[0-5])." +
                         @"(?<part2>[01]?dd?|2[0-4]d|25[0-5])." +
                         @"(?<part3>[01]?dd?|2[0-4]d|25[0-5])." +
                         @"(?<part4>[01]?dd?|2[0-4]d|25[0-5])";
        Regex regex = new Regex( pattern );
        Match match = regex.Match( "192.168.169.1" );

        MatchEvaluator eval = new MatchEvaluator(EntryPoint.IPReverse );
        Console.WriteLine( regex.Replace("192.168.169.1", eval) );
    }

    static string IPReverse( Match match ) {
        Console.WriteLine( match.Groups["part4"] + "." );
        Console.WriteLine( match.Groups["part3"] + "." );
        Console.WriteLine( match.Groups["part2"] + "." );
        Console.WriteLine( match.Groups["part1"] );
        return "";
    }
}

           
          

   

using System;
using System.Text.RegularExpressions;

public class EntryPoint
{
    static void Main( string[] args ) {
        // Create regex to search for IP address pattern.
        string pattern = @"
# First part match
([01]?dd?         
# OR
 |2[0-4]d          
# OR
 |25[0-5])          
.                  

# REPEAT
([01]?dd?|2[0-4]d|25[0-5]).

# REPEAT
([01]?dd?|2[0-4]d|25[0-5]).

# REPEAT
([01]?dd?|2[0-4]d|25[0-5])
";
        Regex regex = new Regex( pattern,
                       RegexOptions.IgnorePatternWhitespace );
        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();
        }
        
    }
}


           
          

   


using System;
using System.Text.RegularExpressions;

public class EntryPoint
{
    static void Main( string[] args ) {
        // Create regex to search for IP address pattern.
        string pattern = @"(?<part1>[01]?dd?|2[0-4]d|25[0-5])." +
                         @"(?<part2>[01]?dd?|2[0-4]d|25[0-5])." +
                         @"(?<part3>[01]?dd?|2[0-4]d|25[0-5])." +
                         @"(?<part4>[01]?dd?|2[0-4]d|25[0-5])";
        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 );
            Console.WriteLine( "Groups are:" );
            Console.WriteLine( "	Part 1: {0}",
                               match.Groups["part1"] );
            Console.WriteLine( "	Part 2: {0}",
                               match.Groups["part2"] );
            Console.WriteLine( "	Part 3: {0}",
                               match.Groups["part3"] );
            Console.WriteLine( "	Part 4: {0}",
                               match.Groups["part4"] );

            match = match.NextMatch();
        }
        
    }
}

           
          

   


using System;
using System.Text.RegularExpressions;

public class EntryPoint
{
    static void Main( string[] args ) {
        // Create regex to search for IP address pattern.
        string pattern = @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])";
        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 );
            Console.WriteLine( "Groups are:" );
            foreach( Group g in match.Groups ) {
                Console.WriteLine( "	{0} at {1}",
                                   g.Value,
                                   g.Index );
            }
            match = match.NextMatch();            
        }
    }
}

           
          

   

using System;
using System.Text.RegularExpressions;

public class EntryPoint
{
    static void Main( string[] args ) {

        // Create regex to search for IP address pattern.
        string pattern = @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])";
        Regex regex = new Regex( pattern );
        Match match = regex.Match( "192.169.168.1" );
        while( match.Success ) {
            Console.WriteLine( "IP Address found at {0} with " +
                               "value of {1}",
                               match.Index,
                               match.Value );

            match = match.NextMatch();
        }
        
    }
}


           
          

   


using System;
using System.Text.RegularExpressions;

public class EntryPoint
{
    static void Main( string[] args ) {

        // Create regex to search for IP address pattern.
        string pattern = @"dd?d?.dd?d?.dd?d?.dd?d?";
        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();
        }
        
    }
}

           
          

   
 


using System;
using System.Threading;

public class NonSignaledManual {
    public static void Main() {
        ManualResetEvent mansig = new ManualResetEvent(false);
        Console.WriteLine("ManualResetEvent Before WaitOne ");
        bool b = mansig.WaitOne(1000, false);
        Console.WriteLine("ManualResetEvent After WaitOne " + b);
    }
}