public static void InsertRoom(Room room)
 {
     if (room != null)
     {
         room.ID = GenerateRoomID();
         OfficeRooms.Add(room);
     }
 }
        public static void RemoveRoomByID(int id)
        {
            Room editableRoom = GetRoomByID(id);

            if (editableRoom != null)
            {
                OfficeRooms.Remove(editableRoom);
            }
        }
 public static int GenerateRoomID()
 {
     return(OfficeRooms.Count > 0 ? OfficeRooms.Last().ID + 1 : 0);
 }