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

Moved Perl note to LinkListInPerl