C#合併兩個Dictionary

 使用Dictionary類別的擴充方法Concat串接兩個序列

Dictionary<Guid, ViewModel.EventModel> events = roomOpenService.GetRoomOpenEvents(roomListID);
 events = events.Concat(roomBookingService.GetRoomBookingEvents(roomListID)).ToDictionary(k => k.Key, v => v.Value);