static public int CheckValidRebates(DateTime time, Rebates rebate)
{
DateTime latestDate = rebate.Date;
latestDate.AddDays(15);
latestDate.AddMonths(1);
// add 1month and 15 to see the expaire date.
return(DateTime.Compare(latestDate, time));
}
/// <summary>
/// method function to combine FindVaildRebates and CheckValidRebates
/// will return -1 if out of date. return 0 if no rebate found
/// </summary>
/// <param name="time"></param>
/// <param name="item"></param>
/// <returns></returns>
static public double GetOff(DateTime time, string item)
{
Rebates currentRebates = FindVaildRebates(item);
if (currentRebates == null)
{
return(1);
}
if (CheckValidRebates(time, currentRebates) < 0)
{
return(1); // out of date
}
else
{
return(currentRebates.Off);
}
}
