建议： UG NX 二次开发中大家尽量使用新的类不要使用废弃的

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太多的类，方法被新的替代掉，一般来讲，前几个版本勉强保留，到后面就删除了，开发的时候选择新的类，凡是deprecated的都不要用。比如sectionsurface的创建，使用带有Ex的 Features.SectionSurfaceBuilderEx
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下面举个例子 你可以看看多少类被替换了！
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Namespace	Class	Release Deprecated	Replacement	Can be removed in next major release of NX
NXOpen	PartFamilyManager	9.0.0	Use PartFamily.TemplateManager instead.	No
NXOpen	PartFamilyMemberData	9.0.0	Use PartFamily.InstanceDefinition and PartFamily.TemplateManager instead.	No
NXOpen	PartFamilyMemberValues	9.0.0	Use PartFamily.InstanceDefinition instead.	No
NXOpen.Annotations	CustomSymbolData	9.0.0	Use Annotations.DraftingCustomSymbolBuilder for Drafting Custom Symbol and Annotations.PmiCustomSymbolBuilder for PMI Custom Symbol objects.	No
NXOpen.Annotations	CustomSymbolTextData	9.0.0	Use Annotations.MasterSymbolListItemBuilder instead. Use Annotations.BaseCustomSymbolBuilder.Texts to query list of custom symbol texts.	No
NXOpen.Annotations	MasterCustomSymbolData	9.0.0	Use Annotations.MasterSymbolBuilder instead.	No
NXOpen.CAE	DurabilityDamageReportBuilder	8.0.1	Use CAE.DurabilityResultsReportBuilder instead.	Yes
NXOpen.CAE	LaminateMetaSol	8.0.0	Use CAE.LaminateSpreadsheetReport and CAE.LaminateGraphicalReport and CAE.LaminateQuickReport instead.	Yes
NXOpen.CAE	LaminateQuickPostReport	8.0.0	Use CAE.LaminateSpreadsheetReport and CAE.LaminateGraphicalReport and CAE.LaminateQuickReport instead.	Yes
NXOpen.Cam	CamGeneralPropertiesBuilder	9.0.1	Use CAM.GeneralPropertiesBuilder instead.	No
NXOpen.CAM	CustomLoops	9.0.0	Use NXOpen.Features.PaTChOpeningsBuilder instead.	No
NXOpen.CAM	CustomLoopSet	9.0.0	Use NXOpen.Features.PatchOpeningsBuilder instead.	No
NXOpen.Features	BridgeCurveBuilder	8.5.0	Use Features.BridgeCurveBuilderEx instead.	Yes
NXOpen.Features	IBoolean	4.0.0	Use Features.BooleanFeature instead.	Yes
NXOpen.Features	Intersect	4.0.0	Use Features.BooleanFeature instead.	Yes
NXOpen.Features	SectionSurfaceBuilder	9.0.0	Use Features.SectionSurfaceBuilderEx instead.	No
NXOpen.Features	StudioSplineBuilder	8.0.0	Use Features.StudioSplineBuilderEx instead.	Yes
NXOpen.Features	StudioXformBuilder	8.5.0	Use Features.StudioXformBuilderEx instead.	Yes
NXOpen.Features	Subtract	4.0.0	Use Features.BooleanFeature instead.	Yes
NXOpen.Features	Unite	4.0.0	Use Features.BooleanFeature instead.	Yes
NXOpen.Features.ShipDesign	ShipFlatPattern	8.0.0	Use Features.ShipDesign.PlatePreparationBuilder.CreatePlatePreparationBuilder() instead.	Yes
NXOpen.Features.ShipDesign	ShipFlatPatternBuilder	8.0.0	Use Features.ShipDesign.PlatePreparationBuilder instead.	Yes
NXOpen.GeometricAnalysis	CurveAnalysisCombsBuilder	8.5.0	Use GeometricAnalysis.CurveCurvatureAnalysis.	Yes
NXOpen.GeometricAnalysis	CurveAnalysisInflectionsBuilder	8.5.0	Use GeometricAnalysis.CurveCurvatureAnalysis.	Yes
NXOpen.GeometricAnalysis	CurveAnalysisPeaksBuilder	8.5.0	Use GeometricAnalysis.CurveCurvatureAnalysis.	Yes
NXOpen.GeometricAnalysis	CurveAnalysisRecord	8.5.0	Use GeometricAnalysis.CurveAnalysisDisplay.	Yes
NXOpen.GeometricUtilities	FaceSetDataCollection	8.5.0	This class is never used and can be safely removed	Yes
NXOpen.GeometricUtilities	PatternClocking	8.0.0	This functionality is no longer supported.	Yes
NXOpen.PDM	PartCreationObjectAttributePropertiesBuilder	8.5.0	Use AttributePropertiesBuilder instead.	Yes
NXOpen.Preferences	SessionVisualizationColorSetting	8.5.0	Use Preferences.PartVisualizationColorSetting instead.	Yes
NXOpen.Preferences	SessionWorkPlane	8.5.0	See Preferences.SessionVisualizationEmphasis.	Yes
NXOpen.Routing	CopeCornerBuilder	8.0.0	Use Routing.AssignCornerBuilder instead.	Yes