//Changes the start or end date of a reservation
public int ChangeReservation(int reservationNumber, DateTime startDate, DateTime endDate)
{
e errCode = e.success;
if (Validation.invalidRes(reservationNumber))
{
errCode = e.invalidRes;
}
else if (Validation.activeRes(reservationNumber))
{
errCode = e.activeRes;
}
else if (Validation.sBeforeToday(startDate))
{
errCode = e.sBeforeToday;
}
else if (Validation.sAfterEnd(startDate, endDate))
{
errCode = e.sAfterEnd;
}
else
{
ReservationDB resDB = new ReservationDB();
if (!resDB.Update(reservationNumber, startDate, endDate))
{
errCode = e.updateFail;
}
}
return(Convert.ToInt16(errCode));
}