public void AddBooking(Booking booking)
{
if (IsFree(booking.StartDate, booking.EndDate))
Bookings.Add(booking);
else
throw new BookingException("Room " + RoomDetails.RoomNb + " in hotel " + booking.HotelName + " not available.");
}
private void FinalizeBooking(Booking booking)
{
var hotel = GetHotel(booking.HotelName);
if (hotel == null)
throw new ArgumentException("There exists no hotel with the given name.");
var room = hotel.GetRoom(booking.RoomNb);
if (room == null)
throw new ArgumentException("There exists no room with the given number.");
room.AddBooking(booking);
db.SaveChanges();
}