Use a regular expression to extract all fully qualified URIs that refer to HTM files : Uri : Network C# Examples

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

class  MainClass
{
        private  static  void  Main()  
        {
                string  remoteUri  =  "http://www.navioo.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);
                        }
                }
        }
}