C#

i am trying to make the following web code work for a C#.net 2008 desktop application. My company wants us to use the same logic to check groups in the active directory. The following is the code snippet I obtained from the contract. 

From the contractor, i also obtained the xml file. The three columns i am referring to are not in the xml file. The fields I am trying to figure out how they are referenced in the app code are the following: 

DirectoryEntry
DirectorySearcher
SearchResult.

Would you have any idea what I can use to point to the columns listed above are that I can use in a C#.net 2008 desktop application? if so, can you show me some code and/or point to a url that I can use as a reference?

The following is the code i am trying to work with:i am trying to make the following web code work for a C#.net 2008 desktop application. My company wants us to use the same logic to check groups in the active directory. The following is the code snippet I obtained from the contract. 

From the contractor, i also obtained the xml file. The three columns i am referring to are not in the xml file. The fields I am trying to figure out how they are referenced in the app code are the following: 

DirectoryEntry
DirectorySearcher
SearchResult.

Would you have any idea what I can use to point to the columns listed above are that I can use in a C#.net 2008 desktop application? if so, can you show me some code and/or point to a url that I can use as a reference?

The following is the code i am trying to work with:


using System;
using System.Collections.Generic;
using System.Text;
using System.DirectoryServices;

namespace Sup
{
    public class ActiveDirectoryValidator
    {
        private string _path;
        private string _filterAttribute;

        public ActiveDirectoryValidator(string path)
        {
            _path = path;
        }

        public bool IsAuthenticated(string domainName, string userName, string password)
        {
         string domainAndUsername = domainName + @"\" + userName;
         DirectoryEntry entry = new DirectoryEntry(_path, domainAndUsername, password);
            try
            {
         // Bind to the native AdsObject to force authentication.
          Object obj = entry.NativeObject;
          DirectorySearcher search = new DirectorySearcher(entry);
          search.Filter = "(SAMAccountName=" + userName + ")";
          search.PropertiesToLoad.Add("cn");
          SearchResult result = search.FindOne();
          if (null == result)
             {
                return false;
             }
          // Update the new path to the user in the directory
           _path = result.Path;
            _filterAttribute = (String)result.Properties["cn"][0];
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
            return true;
        }

    }
}

string[] sn = File.ReadAllLines("serverList.txt");
string[] sl = File.ReadAllLines("serverLocation.txt");
string[] st = File.ReadAllLines("serverType.txt");

ListViewItem lvi = new ListViewItem();
lvi = lv.Items.AddRange(sn);
lvi.SubItems.AddRange(sl);
lvi.SubItems.AddRange(st);