public int CalculateAvailableTickets(Event selectedEvent)
{
// returns a count of available tickets
int tickets = 0;
int maxTickets = selectedEvent.MaxSeats;
try
{
// check if there are any tickets reserved already
if (0 != EventAccessor.RetrieveCountEventIDInRoomEvents(selectedEvent.EventID))
{
// if there is, subtract that amount from the maximum amount
tickets = maxTickets - EventAccessor.RetrieveCountOfPurchasedTickets(selectedEvent.EventID);
}
else
{
// none have been purchased yet, all the tickets remain
tickets = maxTickets;
}
}
catch (Exception)
{
throw;
}
return(tickets);
}