/// <summary>
/// This method returns top n (eg. n = 5) expensive bookings.
/// </summary>
public List <KeyValuePair <string, decimal> > Get_FiveMostExpensiveBookings(int topN = C.LIMIT)
{
try
{
Dictionary <string, decimal> bookingIdWithTotalPrice = RDM.Get_TotalPrice_For_BookingIds(RDM.Get_AllBookingIds());
if (null != bookingIdWithTotalPrice && bookingIdWithTotalPrice.Count() >= topN)
{
var topN_BookingIdWithTotalPrice = (from dic in bookingIdWithTotalPrice orderby dic.Value descending select dic).Take(topN).ToList();
return(topN_BookingIdWithTotalPrice);
}
else
{
return(null);
}
}
catch (FormatException ex1)
{
throw new Exception(C.DATA_CONVERSION_EXP + ex1.Message);
}
catch (Exception ex2)
{
throw new Exception(ex2.Message);
}
}
