Regular Expression C# Tutorial


            using System;
using System.Text.RegularExpressions;
    class Test
    {
        public static void Main()
        {
            string string1 = "04:03:27 abc 0.0.0.127 def";
            Regex theReg = new Regex(@"(?(\d|\:)+)\s" +
                            @"(?\S+)\s" +
                            @"(?(\d|\.)+)\s" +
                            @"(?\S+)\s");
            MatchCollection theMatches = theReg.Matches(string1);
            foreach (Match theMatch in theMatches)
            {
                if (theMatch.Length != 0)
                {
                    Console.WriteLine("theMatch: {0}",theMatch.ToString());
                    Console.WriteLine("time: {0}",theMatch.Groups["time"]);
                    Console.WriteLine("ip: {0}",theMatch.Groups["ip"]);
                    Console.WriteLine("Company: {0}",theMatch.Groups["company"]);
                    foreach (Capture cap in theMatch.Groups["company"].Captures)
                    {
                        Console.WriteLine("cap: {0}", cap.ToString());
                    }
                }
            }
        }
    }