Link List In Dot Net And Cee Sharp

This page presents the WebLinkListExample in CeeSharp, using the DotNet framework and SDK, on a WinXP-professional system.

Installation

• Download the following:
  • Version 1.1 Redistributable framework (http://www.microsoft.com/downloads/details.aspx?familyid=262d25e3-f589-4842-8157-034d1e7cf3a3&displaylang=en)

  • Version 1.1 .Net Framework SDK

(http://www.microsoft.com/downloads/details.aspx?FamilyID=9b3a2ca6-3647-4070-9f41-a333c6b9181d&DisplayLang=en)

• Install the two downloads:
  • Run dotnetfx.exe (the redistributable)
  • Run setup.exe (the SDK)

• Append the framework and SDK to the "Path" environment variable (I use the system properties dialog of "My Computer")

 C:\Program Files\Microsoft.NET\SDK\v1.1\Bin;
 C:\WINNT\Microsoft.NET\Framework\v1.1.4322

Source code

• Create "LinkList.cs" using the editor of your choice.

 using System;
 using System.IO;
 using System.Net;
 using System.Text.RegularExpressions;

 class MyApp
 {
 const int bufsize = 1024;

 static void Main (string[] args)
 {
 if (args.Length < 0) {
 Console.WriteLine ("Error: Missing URL");
 return;
 }

 StreamReader reader = null;

 try {
 WebRequest request = WebRequest.Create (args[0]);
 WebResponse response = request.GetResponse();
 reader = new StreamReader (response.GetResponseStream());
 string content = reader.ReadToEnd();

 Regex regex = new Regex ("href\\s*=\\s*\"([^\"]*)\"",
                                                 RegexOptions.IgnoreCase);

 MatchCollection matches = regex.Matches (content);
 foreach (Match match in matches) Console.WriteLine (match.Groups[1]);
 }

 catch (IOException e) {
 Console.WriteLine (e.Message);
 }
 finally {
 if (reader != null) reader.Close ();
 }
 }
 }

Building/Compiling

• At a command prompt, in the directory containing the source, type the following:

 csc LinkList.cs

Running

• At a command prompt, type the following:

 LinkList http://www.google.com

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Moved Perl note to LinkListInPerl