[IfcRailing.PredefinedType property PredefinedType public IfcRailingTypeEnum PredefinedType { get; set; } 也可以看看 enum IfcRailingTypeEnum class IfcRailing 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]