[IfcConditionCriterion.CriterionDateTime property CriterionDateTime public IfcDateTimeSelect CriterionDateTime { get; set; } 也可以看看 class IfcDateTimeSelect class IfcConditionCriterion 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]