Use a regular expression to extract all fully qualified URIs that refer to HTM files : Uri « Network « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Network
3. Uri

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

class MainClass
{
    private static void Main() 
    {
        string remoteUri = "http://www.java2s.com";
        
        WebClient client = new WebClient();

        Console.WriteLine("Downloading {0}", remoteUri);

        string str = client.DownloadString(remoteUri);

        MatchCollection matches = Regex.Matches(str,@"http\S+[^-,;:?]\.htm");
        
        foreach(Match match in matches) 
        {
            foreach(Group grp in match.Groups) 
            {
                string file = grp.Value.Substring(grp.Value.LastIndexOf('/')+1);
                Console.WriteLine(file);
            }
        }
    }
}

Downloading http://www.java2s.com
CatalogJava.htm
^CTerminate batch job (Y/N)? n