все результаты безуспешны
что я не так делаю?

using System;
using System.DirectoryServices;

namespace DomainList {

class Class1 {

static void Main(string[] args) {

DirectoryEntry directoryEntry = new DirectoryEntry("LDAP://10.10.100.200:300/o=myorg","null","null",AuthenticationTypes.Anonymous);
DirectorySearcher directorySearcher = new DirectorySearcher(directoryEntry);
directorySearcher.Filter = ("(objectClass=organizationalPerson)");

foreach(SearchResult resultsList in directorySearcher.FindAll()) {
//Console.WriteLine(resultsList.GetDirectoryEntry().Name.ToString());
}
}
}
}


C:\Develop>csc print.cs
Microsoft (R) Visual C# .NET Compiler version 8.00.40607.42
for Microsoft (R) Windows (R) .NET Framework version 2.0.40607
Copyright (C) Microsoft Corporation 2001-2003. All rights reserved.


C:\Develop>print.exe

Unhandled Exception: System.Runtime.InteropServices.COMException (0x80005000):
nknown error (0x80005000)
at System.DirectoryServices.DirectoryEntry.Bind(Boolean throwIfFail)
at System.DirectoryServices.DirectoryEntry.Bind()
at System.DirectoryServices.DirectoryEntry.get_AdsObject()
at System.DirectoryServices.DirectorySearcher.FindAll(Boolean findMoreThanOn
)
at System.DirectoryServices.DirectorySearcher.FindAll()
at DomainList.Class1.Main(String[] args)