} // SelectOne
private DateTime?GetDateFromList(MP_CustomerMarketPlace mp, WhichDateToTake nWhich)
{
if (null == Configuration.Instance.GetVendorInfo(mp.Marketplace.Name))
{
return(null);
}
DateTime?oResult = null;
IQueryable <DateTime> oListOfPaymentDates = _session
.Query <MP_ChannelGrabberOrderItem>()
.Where(oi =>
(oi.Order.CustomerMarketPlace.Id == mp.Id) && (oi.PaymentDate != null)
)
.Select(oi => oi.PaymentDate);
foreach (DateTime oDate in oListOfPaymentDates)
{
oResult = SelectOne(oResult, oDate, nWhich);
}
IQueryable <MP_VatReturnRecord> oVatPeriods = _session
.Query <MP_VatReturnRecord>()
.Where(r => r.CustomerMarketPlace.Id == mp.Id && (r.IsDeleted == null || !r.IsDeleted.Value));
foreach (MP_VatReturnRecord oPeriod in oVatPeriods)
{
oResult = SelectOne(oResult, oPeriod.DateFrom, nWhich);
oResult = SelectOne(oResult, oPeriod.DateTo, nWhich);
} // for each
return(oResult);
} // GetDateFromList
} // enum WhichDateToTake
private static DateTime?SelectOne(DateTime?oResult, DateTime oDate, WhichDateToTake nWhich)
{
if (oResult == null)
{
return(oDate);
}
switch (nWhich)
{
case WhichDateToTake.Min:
return((oDate < oResult) ? oDate : oResult);
case WhichDateToTake.Max:
return((oDate > oResult) ? oDate : oResult);
default:
throw new ArgumentOutOfRangeException("nWhich");
} // switch
} // SelectOne
