我有以下表达。有人能告诉我为什么它打印 0。
=IIF(Parameters!StartMonth.Value <= 1 And Parameters!EndMonth.Value >= 1, ReportItems!txtTotal1.Value,
IIF(Parameters!StartMonth.Value <= 2 And Parameters!EndMonth.Value >= 2, ReportItems!txtTotal2.Value,
IIF(Parameters!StartMonth.Value <= 3 And Parameters!EndMonth.Value >= 3, ReportItems!txtTotal3.Value, 0)))
谢谢