Hi,

I have been trying to authenticate user using LDAP. But haven't been successful.
I am getting the following error and below is the code.:

            try
            {
                for (int i = 0; i <=3; i++)
                {
                    LdapAuthentication c = new LdapAuthentication();
                    if (c.IsAuthenticated(adPath,username,password))
                        return;
                }
            }
            catch(Exception ex)
            {
                Console.WriteLine();
                Console.WriteLine("Error authenticating. " + ex.Message+ "===" + ex.StackTrace);
            }
            Console.WriteLine("\nFinished all processing");
   
   
        public bool IsAuthenticated(string path, string username, string pwd)
        {
            try
            {
                Console.WriteLine("\nNow trying... " + path + ", " + username + ", " + pwd);
                DirectoryEntry entry = new DirectoryEntry( path, username,    pwd);
                Object obj = entry.NativeObject;
                return true;
                DirectorySearcher search = new DirectorySearcher(entry);
                SearchResult res = search.FindOne();
           
                if (null == res)
                    return false;
                else
                {
                    Console.WriteLine("Sucessful!! The correct answer is " + path + ", " + username + ", " + pwd);
                    return true;
                }
               
            }
            catch (Exception ex)
            {
                Console.WriteLine("An Exception thrown= " + ex.Message+"===" + ex.StackTrace);
                return false;
            }
           


    ERROR: An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in system.directoryservices.dll
    I also get - Logon failure: unknown user name or bad password

What went wrong? Please help me to debug the code.
Thanks in advance.