Hi, I am looking to be able to pull a list of current OU's from Active Directory I have been looking at some example code online for sometime, but O don't seem to be able to get this to work.

        string defaultNamingContext;

        DirectoryEntry rootDSE = new DirectoryEntry("LDAP://RootDSE");
        defaultNamingContext = rootDSE.Properties["defaultNamingContext"].Value.ToString();
        DirectorySearcher ouSearch = new DirectorySearcher(rootDSE, "(objectClass=organizationalUnit)", 
            null, SearchScope.Subtree);

        MessageBox.Show(rootDSE.ToString());
        try
        {
            SearchResultCollection collectedResult = ouSearch.FindAll();
            foreach (SearchResult temp in collectedResult)
            {
                comboBox1.Items.Add(temp.Properties["name"][0]);
                DirectoryEntry ou = temp.GetDirectoryEntry();
            }

The error I get is There provider does not support searching and cannot search LDAP://RootDSE Any Ideas? for each of those returned search results I want to add them to a combo box. (shouldn't be too hard)