GetRoomLists succeeds but returns no data

Question

I am calling GetRoomLists using Exchange Web Services, we are running Exchange 2010. The below code is being executed through a Console application. The call succeeds, per t

Answer 1

Well I found the cause/solution. The confusion was in that GetRoomLists does not return a list of rooms, but instead a list of a list of rooms, or a collection of "Room Lists". These are a special type of distribution list that contains a list of rooms.

As outlined here, http://social.msdn.microsoft.com/Forums/en-US/exchangesvrdevelopment/thread/4ff04c60-48c2-4a69-ab75-2383e73bfde2, you either need to setup room lists or you need to query AD and check the msExchRecipientDisplayType attribute to track down the rooms.

This link shows an example of how to write the LDAP query to return rooms: http://social.msdn.microsoft.com/Forums/en-US/exchangesvrdevelopment/thread/e2d10953-a8f9-459c-8a0e-f10c2e568b26

Code I put together for finding rooms:

private List<string> GetConfRooms(string filter)
{
    List<string> sRooms = new List<string>();

    DirectoryEntry deDomain = System.DirectoryServices.ActiveDirectory.Domain.GetComputerDomain().GetDirectoryEntry();
    DirectorySearcher dsRooms = new DirectorySearcher(deDomain);

    dsRooms.Filter = string.Format("(&(&(&(mailNickname={0}*)(objectcategory=person)(objectclass=user)(msExchRecipientDisplayType=7))))", filter);

    dsRooms.PropertiesToLoad.Add("sn");
    dsRooms.PropertiesToLoad.Add("mail");

    foreach (SearchResult sr in dsRooms.FindAll())
    {
        sRooms.Add(sr.Properties["mail"][0].ToString());
    }

    return sRooms;
}