Active Directory:  List All Printer Objects

public static ArrayList ActivDir_Search(string OUDN, string ObjectClass, Int32 PageSize)
        {
            ArrayList DirResults = new ArrayList();
 
            try
            {
                DirectoryEntry entry = new DirectoryEntry("LDAP://" + OUDN);
                DirectorySearcher DirSearch = new DirectorySearcher(entry);
 
                // Object Class -->  user, computer, printQueue
                DirSearch.Filter = "(objectClass=" + printer + ")";
                DirSearch.PageSize = 5000;
 
         	string PrinterName= "";
 
                foreach (SearchResult results in DirSearch.FindAll())
                {
                    PrinterName= "";
 
                    foreach (string Value in results.Properties.PropertyNames)
                    {
                        if (results.Properties[Value] != null)
                        {
                            if (Value == "name")
                            {
                                PrinterName = (string)results.Properties[Value][0];
     
                            }
                        }
                    }
                    DirResults.Add(Line);
                }
            }
            catch (IOException)
            {
            }
            catch (DirectoryServicesCOMException)
            {
            }
            return DirResults;
        }