如何在lambda表达式中使用运算符（if else）

问题描述

 CurrentFinancialMovementData movementData = keys.OrderByDescending（s => s.LatestReserveDate ?? s.LatestRecoveryReserveDate）.ThenByDescending（x => x.ReserveDaySequence）.First（）; 
 
 CurrentFinancialMovementData movementDataReserve = keys.Where（s => s.AmountType ==（short）StaticValues.AmountType.Reserve）.OrderByDescending（a => a.LatestReserveDate）.ThenByDescending（x => ; x.ReserveDaySequence）.FirstOrDefault（）; 
 
 CurrentFinancialMovementData movementDataRecoveryReserve = keys.Where（s => s.AmountType ==（short）StaticValues.AmountType.RecoveryReserve）.OrderByDescending（a => a.LatestRecoveryReserveDate）.ThenByDescending（x => ; x.ReserveDaySequence）.FirstOrDefault（）; 

我想检查我的movingData AmountType.Reserve然后它必须采用LatestReserveDate并且如果我的movementData是AmountType.RecoveryReserve，它应该采用LatestRecoveryReserveDate。我想在movingData中处理这种情况。任何人都可以帮助我吗？



我尝试过：



我试过：

if（keys.Any（s => s.AmountType ==（short）StaticValues.AmountType.Reserve））

{CurrentFinancialMovementData movementData = keys .OrderByDescending（s => s.LatestReserveDate）.ThenByDescending（x => x.ReserveDaySequence）.First（）;

}

else if（keys.Any（s => s.AmountType ==（short）StaticValues.AmountType.RecoveryReserve））

{CurrentFinancialMovementData movementData = keys.OrderByDescending（s => s.LatestRecoveryReserveDate）.ThenByDescending（x => x.ReserveDaySequence）.First（）;

}

解决方案

CurrentFinancialMovementData movementData = keys.OrderByDescending(s => s.LatestReserveDate ?? s.LatestRecoveryReserveDate).ThenByDescending(x => x.ReserveDaySequence).First();

CurrentFinancialMovementData movementDataReserve = keys.Where(s => s.AmountType == (short)StaticValues.AmountType.Reserve).OrderByDescending(a => a.LatestReserveDate).ThenByDescending(x => x.ReserveDaySequence).FirstOrDefault();

CurrentFinancialMovementData movementDataRecoveryReserve = keys.Where(s => s.AmountType == (short)StaticValues.AmountType.RecoveryReserve).OrderByDescending(a => a.LatestRecoveryReserveDate).ThenByDescending(x => x.ReserveDaySequence).FirstOrDefault();

I want to check if my movementData AmountType.Reserve then it must take LatestReserveDate and if my movementData is AmountType.RecoveryReserve than it should take LatestRecoveryReserveDate. I want to handle this situation in movementData. Can anyone help me in this ?

What I have tried:

I tried:
if (keys.Any(s => s.AmountType == (short)StaticValues.AmountType.Reserve))
{ CurrentFinancialMovementData movementData = keys.OrderByDescending(s => s.LatestReserveDate).ThenByDescending(x => x.ReserveDaySequence).First();
}
else if (keys.Any(s => s.AmountType == (short)StaticValues.AmountType.RecoveryReserve))
{ CurrentFinancialMovementData movementData = keys.OrderByDescending(s => s.LatestRecoveryReserveDate).ThenByDescending(x => x.ReserveDaySequence).First();
}

解决方案

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