ex-10-08

Programming Csharp Source Code(代码) Programming Csharp Source Code

// Example 10-08: Using the Group class

namespace Programming_CSharp
{
    using System;
    using System.Text.RegularExpressions;

    class Test
    {
        public static void Main()
        {
            string string1 = "04:03:27 127.0.0.0 LibertyAssociates.com";
            
            // group time = one or more digits or colons followed by space
            Regex theReg = new Regex(@"(?<time>(\d|\:)+)\s" +            
            // ip address = one or more digits or dots followed by  space
            @"(?<ip>(\d|\.)+)\s" + 
            // site = one or more characters
            @"(?<site>\S+)"); 
            
            // get the collection of matches
            MatchCollection theMatches = theReg.Matches(string1);

            // iterate through the collection
            foreach (Match theMatch in theMatches)
            {
                if (theMatch.Length != 0)               
                {
                    Console.WriteLine("\ntheMatch: {0}", 
                        theMatch.ToString());          
                    Console.WriteLine("time: {0}", 
                        theMatch.Groups["time"]);
                    Console.WriteLine("ip: {0}",
                        theMatch.Groups["ip"]);
                    Console.WriteLine("site: {0}",
                        theMatch.Groups["site"]);
                }       
            }           
        }               
    }                   
}