Network C#

using System;
using System.Net;
using System.DirectoryServices;
using System.DirectoryServices.Protocols;
public class MainClass {
    public static void Main() {
        Uri uri = new Uri("http://yourSite/dsml1");
        DsmlDirectoryIdentifier identifier = new DsmlDirectoryIdentifier(uri);
        NetworkCredential credentials = new NetworkCredential();
        credentials.UserName = "yourName";
        credentials.Password = "password";
        DsmlSoapHttpConnection connection = new DsmlSoapHttpConnection(identifier, credentials);
        connection.BeginSession();
        string distinguishedname = "yourName";
        string ldapFilter = "object=user";
        string[] attributes = new string[1];
        DirectoryRequest request = new SearchRequest(distinguishedname, ldapFilter, System.DirectoryServices.Protocols.SearchScope.Subtree, null);
        DirectoryResponse response = connection.SendRequest(request);
        connection.EndSession();
    }
}