Thanks for the reply. Win32, COM+, it's all Greek to me! I guess, in
a couple of years, there might be a "Win32/COM+ for .NET Programmers"
but in the meantime...
Anyway, I've put this together and am posting it here in case it's of
use to anyone else:
using System;
using System.Collections.Generic;
using System.Text;
using System.DirectoryServices;
namespace LocateAServiceUsingAnSCP
{
class Program
{
static void Main(string[] args)
{
string gcPath;
gcPath = GetGlobalCatalogNC();
using (DirectoryEntry gcRoot = new DirectoryEntry("GC://" +
gcPath))
using (DirectorySearcher ds = new DirectorySearcher())
{
//Search the global catalog for objects with a
//keyword which identifies the ADAM instance
ds.SearchRoot = gcRoot;
ds.SearchScope = SearchScope.Subtree;
ds.PageSize = 1000;
//looking for an ADAM instance from the
//Microsoft ADAM Step-by-Step Guide
ds.Filter = "(keywords=partition:O=Microsoft,C=US)";
using (SearchResultCollection src = ds.FindAll())
{
if (src.Count == 0)
{
Console.WriteLine("No results found - " +
"press <ENTER> to close this window...");
Console.ReadLine();
return;
}
foreach (SearchResult sr in src)
{
//bind to the Global Catalog entry for the SCP
using (DirectoryEntry gcDirEntry =
sr.GetDirectoryEntry())
{
Console.WriteLine("Global Catalog Entry:
{0}",
gcDirEntry.Path);
string distinguishedName =
gcDirEntry.Properties["distinguishedName"].Value.ToString();
//using the distinguishedName from the GC
entry,
//bind to the SCP object
using (DirectoryEntry ncDirEntry =
new DirectoryEntry("LDAP://" +
distinguishedName))
{
string serviceClassName =
ncDirEntry.Properties["serviceClassName"].Value.ToString();
string serviceDNSName =
ncDirEntry.Properties["serviceDNSName"].Value.ToString();
string serviceDNSNameType =
ncDirEntry.Properties["serviceDNSNameType"].Value.ToString();
object[] objects =
(object[])ncDirEntry.Properties["serviceBindingInformation"].Value;
string[] serviceBindingInformation =
new string[objects.Length];
objects.CopyTo(serviceBindingInformation, 0);
Console.WriteLine("serviceClassName :
{0}",
serviceClassName);
Console.WriteLine("serviceDNSName :
{0}",
serviceDNSName);
Console.WriteLine("serviceDNSNameType:
{0}",
serviceDNSNameType);
foreach (string serviceBindingItem in
serviceBindingInformation)
{
Console.WriteLine("serviceBindingInformation: {0}",
serviceBindingItem);
}
}
}
}
Console.WriteLine("Press <ENTER> to close this
window...");
Console.ReadLine();
}
}
}
private static string GetGlobalCatalogNC()
{
string gcPath;
using (DirectoryEntry rootDSE = new
DirectoryEntry("LDAP://RootDSE"))
{
gcPath =
rootDSE.Properties["rootDomainNamingContext"].Value.ToString();
}
return gcPath;
}
}
}
Although it's knocked together to test the concept, rather than written
to be production code, I'd still appreciate any comments as to the way
I've done things.
It's not Win32 stuff, it's C++ code that calls ActiveDirectory COM API's. The same can be
achieved by using System.DirectoryServices in .NET. Check MSDN for samples using C# to
access the AD's Global Catalog (GC).
Willy.
