Find Multi Domain

I am using a C# System.DirectoryServices assembly to sniff out all domains listed under LDAP.

So first I create a DirectorySearcher with the correct "LDAP://RootDSE" entry.
Then I call the FindAll() method.
See Snippet:

DirectorySearcher directorySearcher = new DirectorySearcher(new DirectoryEntry("LDAP://RootDSE"));
SearchResultCollection results = directorySearcher.FindAll();
foreach (SearchResult searchResult in results)
{
Console.WriteLine(searchResult.Path);
}

The problem is I always get only ONE returned SearchResult!
The IT guys tell me I should be able to see two results.

Does anyone have a script or snippet which works for them?
Is my snippet totally off the mark?

Any help will be greatly appreciated
-c