[IfcBuildingElementProxyType.PredefinedType property PredefinedType public IfcBuildingElementProxyTypeEnum PredefinedType { get; set; } 也可以看看 enum IfcBuildingElementProxyTypeEnum class IfcBuildingElementProxyType 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]