[IfcRecurrencePattern.DayComponent property DayComponent public IfcCollection<IfcDayInMonthNumber> DayComponent { get; set; } 也可以看看 class IfcCollection<T> class IfcDayInMonthNumber class IfcRecurrencePattern 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]