Linq 2 SQL复杂查询（计数问题）

Question

好吧，我正在尝试编写查询以获取每个区域的总来宾计数，到目前为止，我失败了:)

var Results = from g in DB.tblSecurityZones
              join PoliceStations in DB.tblPoliceStations
                  on g.SecurityZoneID equals PoliceStations.SecurityZoneID
              join Hotel in DB.tblHotels
                  on PoliceStations.PoliceStationID equals Hotel.PoliceStationID
              join HotelGuest in DB.tblGuests
                  on Hotel.HotelID equals HotelGuest.HotelID
              group g by new 
              { 
                  Zone = g.Name,
                  PoliceStation = PoliceStations.Name,
                  Hotel = Hotel.HotelName
              } into Result
              select new 
              {
                  Result.Key.Hotel,
                  Result.Key.PoliceStation,
                  Result.Key.Zone
              };

我想要从每个区域返回来宾计数。

我有HotelName，PoliceStationName和ZoneName，但我也想不出如何获取GuestCounts：S

Answer 1

select new 
{
    Result.Key.Hotel,
    Result.Key.PoliceStation,
    Result.Key.Zone,
    Count = Result.Count()
};