Namespaces
- Autodesk.Revit.ApplicationServices
- Autodesk.Revit.Attributes
- Autodesk.Revit.Creation
- Autodesk.Revit.DB
  - ACADExportOptions Class
  - ACADVersion Enumeration
  - ACAObjectPreference Enumeration
  - AdaptiveComponentFamilyUtils Class
  - AdaptiveComponentInstanceUtils Class
  - AdaptivePointConstraintType Enumeration
  - AdaptivePointOrientationType Enumeration
  - AdaptivePointType Enumeration
  - AddInId Class
  - AllowedValues Enumeration
  - AlphanumericRevisionSettings Class
  - AlternateUnits Enumeration
  - AnalyzesAsType Enumeration
  - AngularDimension Class
  - AnnotationMultipleAlignmentUtils Class
  - AnnotationSymbol Class
  - AnnotationSymbolType Class
  - APIObject Class
  - AppearanceAssetElement Class
  - Arc Class
  - ArcLengthDimension Class
  - Area Class
  - AreaElemType Enumeration
  - AreaFilter Class
  - AreaScheme Class
  - AreaTag Class
  - AreaTagFilter Class
  - AreaTagType Class
  - AreaVolumeSettings Class
  - ArrayAnchorMember Enumeration
  - AssemblyCodeTable Class
  - AssemblyDetailViewOrientation Enumeration
  - AssemblyDifference Class
  - AssemblyDifferenceConfiguration Class
  - AssemblyDifferenceMemberCount Class
  - AssemblyDifferenceMemberDifference Class
  - AssemblyDifferenceNamingCategory Class
  - AssemblyDifferenceNone Class
  - AssemblyInstance Class
  - AssemblyMemberDifference Class
  - AssemblyMemberDifferentCategory Class
  - AssemblyMemberDifferentGeometry Class
  - AssemblyMemberDifferentParameters Class
  - AssemblyMemberDifferentType Class
  - AssemblyType Class
  - AssemblyViewUtils Class
  - AttachmentLocation Enumeration
  - AttachmentType Enumeration
  - AutomaticConnectionBehaviorType Enumeration
  - AXMImportOptions Class
  - BackClippingParam Enumeration
  - BackgroundImageFit Enumeration
  - BackgroundSettings Class
  - BackgroundStyle Enumeration
  - BarTypeDiameterOptions Class
  - BaseArray Class
  - BaseExportOptions Class
  - BaseImportOptions Class
  - BaseLoadOn Enumeration
  - BasePoint Class
  - BasicFileInfo Class
  - BeamSystem Class
  - BeamSystemJustifyType Enumeration
  - BeamSystemType Class
  - BehaviorType Enumeration
  - BendingDetailPositionOptions Enumeration
  - BIMExportOptions Class
  - Binding Class
  - BindingMap Class
  - Blend Class
  - BooleanOperationsType Enumeration
  - BooleanOperationsUtils Class
  - BorderTile Enumeration
  - BoundarySegment Class
  - BoundaryValidation Class
  - BoundingBoxContainsPointFilter Class
  - BoundingBoxIntersectsFilter Class
  - BoundingBoxIsInsideFilter Class
  - BoundingBoxUV Class
  - BoundingBoxXYZ Class
  - BoxPlacement Enumeration
  - BRepBuilder Class
  - BRepBuilderEdgeGeometry Class
  - BRepBuilderGeometryId Class
  - BRepBuilderOutcome Enumeration
  - BRepBuilderPersistentIds Class
  - BRepBuilderState Enumeration
  - BRepBuilderSurfaceGeometry Class
  - BRepType Enumeration
  - BrowserOrganization Class
  - BrowserOrganizationType Enumeration
  - BuildingPadType Class
  - BuildingType Enumeration
  - BuiltInCategory Enumeration
  - BuiltInFailures Class
  - BuiltInFailures.AlignmentFailures Class
  - BuiltInFailures.AnalyticalModelFailures Class
  - BuiltInFailures.ArrayFailures Class
  - BuiltInFailures.AssemblyFailures Class
  - BuiltInFailures.AutoJoinFailures Class
  - BuiltInFailures.AutoRouteFailures Class
  - BuiltInFailures.BeamFailures Class
  - BuiltInFailures.BeamSystemFailures Class
  - BuiltInFailures.BendFailures Class
  - BuiltInFailures.BlendFailures Class
  - BuiltInFailures.ColorFillFailures Class
  - BuiltInFailures.ColumnFailures Class
  - BuiltInFailures.ColumnInsideWallFailures Class
  - BuiltInFailures.ComponentRepeaterFailures Class
  - BuiltInFailures.ComponentRepeaterSlotFailures Class
  - BuiltInFailures.ConnectorFailures Class
  - BuiltInFailures.ConstraintFailures Class
  - BuiltInFailures.ConversionFailures Class
  - BuiltInFailures.CopyMonitorFailures Class
  - BuiltInFailures.CopyPasteFailures Class
  - BuiltInFailures.CreationFailures Class
  - BuiltInFailures.CurtainGridFamilyFailures Class
  - BuiltInFailures.CurtainWallFailures Class
  - BuiltInFailures.CurveByPointFailures Class
  - BuiltInFailures.CurveFailures Class
  - BuiltInFailures.CutFailures Class
  - BuiltInFailures.CutterFailures Class
  - BuiltInFailures.CuttingFailures Class
  - BuiltInFailures.DatumPlaneFailures Class
  - BuiltInFailures.DebugTabBindingFailures Class
  - BuiltInFailures.DecalFailures Class
  - BuiltInFailures.DesignOptionFailures Class
  - BuiltInFailures.DetailFailures Class
  - BuiltInFailures.DimensionFailures Class
  - BuiltInFailures.DirectContext3DFailures Class
  - BuiltInFailures.DirectShapeFailures Class
  - BuiltInFailures.DisplacementElementFailures Class
  - BuiltInFailures.DividedPathFailures Class
  - BuiltInFailures.DividedSurfaceFailures Class
  - BuiltInFailures.DocumentFailures Class
  - BuiltInFailures.DPartFailures Class
  - BuiltInFailures.DuctFailures Class
  - BuiltInFailures.EditingFailures Class
  - BuiltInFailures.ElectricalFailures Class
  - BuiltInFailures.ElectricityFailures Class
  - BuiltInFailures.ElementFailures Class
  - BuiltInFailures.ElementTypeFailures Class
  - BuiltInFailures.ElevationFailures Class
  - BuiltInFailures.EnergyAnalysisFailures Class
  - BuiltInFailures.EnergyAnalysisUtilitiesDBFailures Class
  - BuiltInFailures.ExportFailures Class
  - BuiltInFailures.ExternalResourceReferenceFailures Class
  - BuiltInFailures.ExtrusionFailures Class
  - BuiltInFailures.FabricAreaFailures Class
  - BuiltInFailures.FabricFailures Class
  - BuiltInFailures.FabricSheetFailures Class
  - BuiltInFailures.FaceSplitterFailures Class
  - BuiltInFailures.FamilyFailures Class
  - BuiltInFailures.FilledRegionFailures Class
  - BuiltInFailures.FloorFailures Class
  - BuiltInFailures.FluidFailures Class
  - BuiltInFailures.ForeignFileFailures Class
  - BuiltInFailures.FormFailures Class
  - BuiltInFailures.GeneralFailures Class
  - BuiltInFailures.GenericFailures Class
  - BuiltInFailures.GenericMEPFailures Class
  - BuiltInFailures.GeometryFailures Class
  - BuiltInFailures.GlobalParameterFailures Class
  - BuiltInFailures.GridChainSketchFailures Class
  - BuiltInFailures.GridFailures Class
  - BuiltInFailures.GroupFailures Class
  - BuiltInFailures.HostObjFailures Class
  - BuiltInFailures.HvacFailures Class
  - BuiltInFailures.IlluminationFailures Class
  - BuiltInFailures.ImageFailures Class
  - BuiltInFailures.ImportExportFailures Class
  - BuiltInFailures.ImportFailures Class
  - BuiltInFailures.InaccurateFailures Class
  - BuiltInFailures.InfillFailures Class
  - BuiltInFailures.InterferenceFailures Class
  - BuiltInFailures.JoinElementsFailures Class
  - BuiltInFailures.KeyBasedTreeEntryFailures Class
  - BuiltInFailures.KeyBasedTreeFileFailures Class
  - BuiltInFailures.KeynoteFailures Class
  - BuiltInFailures.KeynoteTagFailures Class
  - BuiltInFailures.LegendFailures Class
  - BuiltInFailures.LevelAssociationFailures Class
  - BuiltInFailures.LevelFailures Class
  - BuiltInFailures.LinkFailures Class
  - BuiltInFailures.LoadFailures Class
  - BuiltInFailures.LooseDimensionFailures Class
  - BuiltInFailures.MacroFailures Class
  - BuiltInFailures.MassFailures Class
  - BuiltInFailures.MatchlineFailures Class
  - BuiltInFailures.MechanicalFailures Class
  - BuiltInFailures.MEPCalculationFailures Class
  - BuiltInFailures.MEPFabricationFailures Class
  - BuiltInFailures.MEPSupportFailures Class
  - BuiltInFailures.MirrorFailures Class
  - BuiltInFailures.MultiReferenceAnnotationFailures Class
  - BuiltInFailures.NumberingFailures Class
  - BuiltInFailures.OffsetFacesCellLegacyFailures Class
  - BuiltInFailures.OpeningFailures Class
  - BuiltInFailures.OverlapFailures Class
  - BuiltInFailures.ParameterFailures Class
  - BuiltInFailures.PartMakerMethodForMergePartFailures Class
  - BuiltInFailures.PartMakerMethodForWallFailures Class
  - BuiltInFailures.PathFailures Class
  - BuiltInFailures.PathOfTravelFailures Class
  - BuiltInFailures.PerformanceFailures Class
  - BuiltInFailures.PipingFailures Class
  - BuiltInFailures.PlanRegionFailures Class
  - BuiltInFailures.PointFailures Class
  - BuiltInFailures.ProfileFailures Class
  - BuiltInFailures.PropertySetElementFailures Class
  - BuiltInFailures.RebarBendingDetailFailures Class
  - BuiltInFailures.RebarCouplerFailures Class
  - BuiltInFailures.RebarFailures Class
  - BuiltInFailures.RebarShapeFailures Class
  - BuiltInFailures.RebarSystemFailures Class
  - BuiltInFailures.RefPlaneFailures Class
  - BuiltInFailures.RegenFailures Class
  - BuiltInFailures.RenderFailures Class
  - BuiltInFailures.RevisionCloudFailures Class
  - BuiltInFailures.RevisionFailures Class
  - BuiltInFailures.RevolutionFailures Class
  - BuiltInFailures.RoofFailures Class
  - BuiltInFailures.RoomFailures Class
  - BuiltInFailures.ScaleFailures Class
  - BuiltInFailures.ScheduleViewFailures Class
  - BuiltInFailures.SculptingFailures Class
  - BuiltInFailures.SectionViewFailures Class
  - BuiltInFailures.SelectionFailures Class
  - BuiltInFailures.SharedCoordinatesFailures Class
  - BuiltInFailures.SheetCollectionFailures Class
  - BuiltInFailures.SheetFailures Class
  - BuiltInFailures.SiteFailures Class
  - BuiltInFailures.SiteImportFailures Class
  - BuiltInFailures.SketchFailures Class
  - BuiltInFailures.SkylightFailures Class
  - BuiltInFailures.SlabFailures Class
  - BuiltInFailures.SlabShapeFailures Class
  - BuiltInFailures.SlantedColumnFailures Class
  - BuiltInFailures.SpanDirectionSymbolFailures Class
  - BuiltInFailures.SplineFailures Class
  - BuiltInFailures.SplitSketchBasedElementFailures Class
  - BuiltInFailures.SplitToposolidFailures Class
  - BuiltInFailures.StairRampFailures Class
  - BuiltInFailures.SteelElementFailures Class
  - BuiltInFailures.SteelElementsFailures Class
  - BuiltInFailures.StructuralAssetFailures Class
  - BuiltInFailures.StructuralConnectionFailures Class
  - BuiltInFailures.StructuralCustomConnectionFailures Class
  - BuiltInFailures.StructuralLoadFailures Class
  - BuiltInFailures.SubRegionFailures Class
  - BuiltInFailures.SweepFailures Class
  - BuiltInFailures.SweptBlendFailures Class
  - BuiltInFailures.SystemNavigatorFailures Class
  - BuiltInFailures.SystemsFailures Class
  - BuiltInFailures.TagFailures Class
  - BuiltInFailures.TextFailures Class
  - BuiltInFailures.TilePatternTileFailures Class
  - BuiltInFailures.ToggleViewFailures Class
  - BuiltInFailures.TrussFailures Class
  - BuiltInFailures.UniqueElementFailures Class
  - BuiltInFailures.ViewFailures Class
  - BuiltInFailures.ViewSheetFailures Class
  - BuiltInFailures.WallFailures Class
  - BuiltInFailures.WallJoinFailures Class
  - BuiltInFailures.WallJoinRoofFailures Class
  - BuiltInFailures.WorksharingFailures Class
  - BuiltInFailures.ZoneFailures Class
  - BuiltInParameter Enumeration
  - CADExportOptions Class
  - CADLinkOperations Class
  - CADLinkOptions Class
  - CADLinkType Class
  - CameraInfo Class
  - CancellationListener Class
  - Categories Class
  - Category Class
  - CategoryNameMap Class
  - CategoryNameMapIterator Class
  - CategorySet Class
  - CategorySetIterator Class
  - CategoryType Enumeration
  - Ceiling Class
  - CeilingAndFloor Class
  - CeilingType Class
  - CellType Enumeration
  - ChangePriority Enumeration
  - ChangeType Class
  - CheckoutStatus Enumeration
  - City Class
  - CitySet Class
  - CitySetIterator Class
  - ClassificationEntries Class
  - ClassificationEntry Class
  - ClosestPointsPairBetweenTwoCurves Class
  - Color Class
  - ColorBackgroundSettings Class
  - ColorDepthType Enumeration
  - ColorFillLegend Class
  - ColorFillScheme Class
  - ColorFillSchemeEntry Class
  - ColorOptions Class
  - ColorWithTransparency Class
  - ColumnAttachment Class
  - ColumnAttachmentCutStyle Enumeration
  - ColumnAttachmentJustification Enumeration
  - CombinableElement Class
  - CombinableElementArray Class
  - CombinableElementArrayIterator Class
  - ComponentRepeater Class
  - ComponentRepeaterIterator Class
  - ComponentRepeaterSlot Class
  - ComponentRotation Enumeration
  - CompoundStructure Class
  - CompoundStructureError Enumeration
  - CompoundStructureLayer Class
  - ConfigurationReloadInfo Class
  - ConicalFace Class
  - ConicalSurface Class
  - ConnectionResolution Enumeration
  - ConnectionValidationInfo Class
  - ConnectionValidationWarning Class
  - ConnectionWarning Enumeration
  - Connector Class
  - ConnectorDomainType Enumeration
  - ConnectorElement Class
  - ConnectorGenderType Enumeration
  - ConnectorJointType Enumeration
  - ConnectorManager Class
  - ConnectorProfileType Enumeration
  - ConnectorSet Class
  - ConnectorSetIterator Class
  - ConnectorType Enumeration
  - Construction Class
  - ContentNode Class
  - ContourSetting Class
  - ContourSettingItem Class
  - ContourSettingItemType Enumeration
  - Control Class
  - ControlShape Enumeration
  - CoordinatePlaneVisibility Enumeration
  - CopyPasteOptions Class
  - CurtainCell Class
  - CurtainGrid Class
  - CurtainGridAlignType Enumeration
  - CurtainGridLine Class
  - CurtainGridSet Class
  - CurtainGridSetIterator Class
  - CurtainSystem Class
  - CurtainSystemBase Class
  - CurtainSystemType Class
  - Curve Class
  - CurveArrArray Class
  - CurveArrArrayIterator Class
  - CurveArray Class
  - CurveArrayIterator Class
  - CurveByPoints Class
  - CurveByPointsArray Class
  - CurveByPointsArrayIterator Class
  - CurveByPointsUtils Class
  - CurvedEdgeConditionParam Enumeration
  - CurveElement Class
  - CurveElementFilter Class
  - CurveElementType Enumeration
  - CurveExtents Class
  - CurveLoop Class
  - CurveLoopIterator Class
  - CurveLoopsProfile Class
  - CurveNode Class
  - CurveProjectionType Enumeration
  - CurveUV Class
  - CustomExporter Class
  - CustomFieldData Class
  - CustomSubCategoryId Enumeration
  - CutFailureReason Enumeration
  - CylindricalFace Class
  - CylindricalHelix Class
  - CylindricalSurface Class
  - DataConversionMonitorScope Class
  - DataExchangeMessageId Enumeration
  - DataExchangeMessageSeverity Enumeration
  - DataExchangeMessageVerbosity Enumeration
  - DatumEnds Enumeration
  - DatumExtentType Enumeration
  - DatumPlane Class
  - DecimalSymbol Enumeration
  - DefaultDivideSettings Class
  - DefaultOpenFromCloudCallback Class
  - Definition Class
  - DefinitionBindingMap Class
  - DefinitionBindingMapIterator Class
  - DefinitionFile Class
  - DefinitionGroup Class
  - DefinitionGroups Class
  - Definitions Class
  - DeleteElements Class
  - DeleteWorksetOption Enumeration
  - DeleteWorksetSettings Class
  - DesignOption Class
  - DetachFromCentralOption Enumeration
  - DetailArc Class
  - DetailCurve Class
  - DetailCurveArray Class
  - DetailCurveArrayIterator Class
  - DetailElementOrderUtils Class
  - DetailEllipse Class
  - DetailLine Class
  - DetailNurbSpline Class
  - DGNExportOptions Class
  - DGNFileFormat Enumeration
  - DGNImportOptions Class
  - DigitGroupingAmount Enumeration
  - DigitGroupingSymbol Enumeration
  - Dimension Class
  - DimensionEqualityLabelFormatting Class
  - DimensionSegment Class
  - DimensionSegmentArray Class
  - DimensionSegmentArrayIterator Class
  - DimensionShape Enumeration
  - DimensionStyleType Enumeration
  - DimensionType Class
  - DirectShape Class
  - DirectShapeLibrary Class
  - DirectShapeOptions Class
  - DirectShapeReferenceOptions Class
  - DirectShapeReferencingOption Enumeration
  - DirectShapeRoomBoundingOption Enumeration
  - DirectShapeTargetViewType Enumeration
  - DirectShapeType Class
  - DirectShapeTypeOptions Class
  - DirectShapeTypeUserAssignability Enumeration
  - DisableAnalyticalModelCB Class
  - DisciplineTypeId Class
  - DisplacementElement Class
  - DisplacementPath Class
  - DisplacementPathStyle Enumeration
  - DisplayStyle Enumeration
  - DisplayUnit Enumeration
  - DistanceMeasuredFrom Enumeration
  - DistributionOfNormals Enumeration
  - DividedPath Class
  - DividedPathMeasurementType Enumeration
  - DividedSurface Class
  - Document Class
  - DocumentDifference Class
  - DocumentPreviewSettings Class
  - DocumentSet Class
  - DocumentSetIterator Class
  - DocumentType Enumeration
  - DocumentValidation Class
  - DocumentVersion Class
  - Domain Enumeration
  - DoorEvacuationExitType Enumeration
  - DoubleArray Class
  - DoubleArrayIterator Class
  - DoubleParameterValue Class
  - DrawLayer Enumeration
  - DuplicateTypeAction Enumeration
  - DuplicateTypeNamesHandlerArgs Class
  - DWFExportOptions Class
  - DWFImageFormat Enumeration
  - DWFImageQuality Enumeration
  - DWFImportOptions Class
  - DWFXExportOptions Class
  - DWGExportOptions Class
  - DWGImportOptions Class
  - DXFExportOptions Class
  - EaveCutterType Enumeration
  - Edge Class
  - EdgeArray Class
  - EdgeArrayArray Class
  - EdgeArrayArrayIterator Class
  - EdgeArrayIterator Class
  - EdgeEndPoint Class
  - EditScope Class
  - Element Class
  - ElementArray Class
  - ElementArrayIterator Class
  - ElementBinding Class
  - ElementCategoryFilter Class
  - ElementClassFilter Class
  - ElementDesignOptionFilter Class
  - ElementFilter Class
  - ElementId Class
  - ElementIdParameterValue Class
  - ElementIdSetFilter Class
  - ElementIntersectsElementFilter Class
  - ElementIntersectsFilter Class
  - ElementIntersectsSolidFilter Class
  - ElementIsCurveDrivenFilter Class
  - ElementIsElementTypeFilter Class
  - ElementLevelFilter Class
  - ElementLogicalFilter Class
  - ElementMulticategoryFilter Class
  - ElementMulticlassFilter Class
  - ElementNode Class
  - ElementOnPhaseStatus Enumeration
  - ElementOwnerViewFilter Class
  - ElementParameterFilter Class
  - ElementPhaseStatusFilter Class
  - ElementQuickFilter Class
  - ElementRecord Class
  - ElementReferenceType Enumeration
  - ElementSet Class
  - ElementSetIterator Class
  - ElementSlowFilter Class
  - ElementStructuralTypeFilter Class
  - ElementTransformUtils Class
  - ElementType Class
  - ElementTypeGroup Enumeration
  - ElementWorksetFilter Class
  - ElevationMarker Class
  - Ellipse Class
  - EndCapCondition Enumeration
  - EntryAndSchemeConsistency Enumeration
  - EvaluatedParameter Class
  - ExclusionFilter Class
  - ExportColorMode Enumeration
  - ExportColumnHeaders Enumeration
  - ExportDGNSettings Class
  - ExportDWGSettings Class
  - ExportEnergyModelType Enumeration
  - ExportFontInfo Class
  - ExportFontKey Class
  - ExportFontTable Class
  - ExportFontTableIterator Class
  - ExportIFCCategoryInfo Class
  - ExportIFCCategoryKey Class
  - ExportLayerInfo Class
  - ExportLayerKey Class
  - ExportLayerTable Class
  - ExportLayerTableIterator Class
  - ExportLinetypeInfo Class
  - ExportLinetypeKey Class
  - ExportLinetypeTable Class
  - ExportLinetypeTableIterator Class
  - ExportLineweightInfo Class
  - ExportLineweightKey Class
  - ExportLineweightTable Class
  - ExportLineweightTableIterator Class
  - ExportPaperFormat Enumeration
  - ExportPatternInfo Class
  - ExportPatternKey Class
  - ExportPatternTable Class
  - ExportPatternTableIterator Class
  - ExportPDFSettings Class
  - ExportRange Enumeration
  - ExportResolution Enumeration
  - ExportSheetType Enumeration
  - ExportTextQualifier Enumeration
  - ExportUnit Enumeration
  - ExportUtils Class
  - ExternalDBApplicationResult Enumeration
  - ExternalDefinition Class
  - ExternalDefinitionCreationOptions Class
  - ExternalDefinitions Class
  - ExternalFileReference Class
  - ExternalFileReferenceType Enumeration
  - ExternalFileUtils Class
  - ExternalGeometryId Class
  - ExternallyTaggedBRep Class
  - ExternallyTaggedGeometryObject Class
  - ExternallyTaggedGeometryValidation Class
  - ExternallyTaggedNonBRep Class
  - ExternallyTaggedNonBReps Class
  - ExternallyTaggedNonBRepUsage Enumeration
  - ExternalResourceBrowserData Class
  - ExternalResourceLoadContent Class
  - ExternalResourceLoadContext Class
  - ExternalResourceLoadData Class
  - ExternalResourceLoadStatus Enumeration
  - ExternalResourceMatchOptions Class
  - ExternalResourceReference Class
  - ExternalResourceServerExtensions Class
  - ExternalResourceServerUtils Class
  - ExternalResourceServiceUtils Class
  - ExternalResourceSubFolder Class
  - ExternalResourceType Class
  - ExternalResourceTypes Class
  - ExternalResourceTypes.BuiltInExternalResourceTypes Class
  - ExternalResourceUIBrowseResultType Enumeration
  - ExternalResourceUtils Class
  - Extrusion Class
  - ExtrusionAnalyzer Class
  - ExtrusionAnalyzerFaceAlignment Enumeration
  - ExtrusionRoof Class
  - FabricationAncillaryUsage Class
  - FabricationConfiguration Class
  - FabricationConfigurationInfo Class
  - FabricationConnectorInfo Class
  - FabricationDimensionDefinition Class
  - FabricationDimensionType Enumeration
  - FabricationDimensionUnitType Enumeration
  - FabricationHostedInfo Class
  - FabricationItemFile Class
  - FabricationItemFolder Class
  - FabricationMaterialType Enumeration
  - FabricationPart Class
  - FabricationPartType Class
  - FabricationRodInfo Class
  - FabricationService Class
  - FabricationServiceButton Class
  - FabricationServiceSettings Class
  - FabricationVersionInfo Class
  - Face Class
  - FaceArray Class
  - FaceArrayIterator Class
  - FaceDetailNode Class
  - FaceEdgeNode Class
  - FaceIntersectionFaceResult Enumeration
  - FaceNode Class
  - FaceSecondDerivatives Class
  - FaceSilhouetteNode Class
  - FaceSplitter Class
  - FacetingUtils Class
  - FaceToposolid Class
  - FaceWall Class
  - FailureDefinition Class
  - FailureDefinitionAccessor Class
  - FailureDefinitionId Class
  - FailureDefinitionRegistry Class
  - FailureHandlingOptions Class
  - FailureMessage Class
  - FailureMessageAccessor Class
  - FailureMessageKey Class
  - FailureProcessingResult Enumeration
  - FailureResolution Class
  - FailureResolutionType Enumeration
  - FailuresAccessor Class
  - FailureSeverity Enumeration
  - Family Class
  - FamilyElementVisibility Class
  - FamilyElementVisibilityType Enumeration
  - FamilyHostingBehavior Enumeration
  - FamilyInstance Class
  - FamilyInstanceFilter Class
  - FamilyInstanceReferenceType Enumeration
  - FamilyManager Class
    - FamilyManager Properties
    - FamilyManager Methods
      - AddParameter Method
        AddParameter(ExternalDefinition, ForgeTypeId, Boolean) Method
        AddParameter(String, ForgeTypeId, Category, Boolean) Method
        AddParameter(String, ForgeTypeId, ForgeTypeId, Boolean) Method
      - AssociateElementParameterToFamilyParameter Method
      - CanElementParameterBeAssociated Method
      - DeleteCurrentType Method
      - GetAssociatedFamilyParameter Method
      - GetParameter Method
      - GetParameters Method
      - IsParameterLockable Method
      - IsParameterLocked Method
      - IsUserAssignableParameterGroup Method
      - MakeInstance Method
      - MakeNonReporting Method
      - MakeReporting Method
      - MakeType Method
      - NewType Method
      - RemoveParameter Method
      - RenameCurrentType Method
      - RenameParameter Method
      - ReorderParameters Method
      - ReplaceParameter Method
      - Set Method
      - SetDescription Method
      - SetFormula Method
      - SetParameterLocked Method
      - SetValueString Method
      - SortParameters Method
  - FamilyNestingBehavior Enumeration
  - FamilyParameter Class
  - FamilyParameterSet Class
  - FamilyParameterSetIterator Class
  - FamilyPlacementType Enumeration
  - FamilyPointLocation Class
  - FamilyPointPlacementReference Class
  - FamilySizeTable Class
  - FamilySizeTableColumn Class
  - FamilySizeTableErrorInfo Class
  - FamilySizeTableErrorType Enumeration
  - FamilySizeTableManager Class
  - FamilySource Enumeration
  - FamilySymbol Class
  - FamilySymbolFilter Class
  - FamilySymbolProfile Class
  - FamilyThermalProperties Class
  - FamilyType Class
  - FamilyTypeSet Class
  - FamilyTypeSetIterator Class
  - FamilyUtils Class
  - FBXExportOptions Class
  - FilePath Class
  - FilledRegion Class
  - FilledRegionType Class
  - FillGrid Class
  - FillPattern Class
  - FillPatternElement Class
  - FillPatternHostOrientation Enumeration
  - FillPatternTarget Enumeration
  - FilterableValueProvider Class
  - FilterCategoryRule Class
  - FilterDoubleRule Class
  - FilteredElementCollector Class
  - FilteredElementIdIterator Class
  - FilteredElementIterator Class
  - FilteredWorksetCollector Class
  - FilteredWorksetIdIterator Class
  - FilteredWorksetIterator Class
  - FilterElement Class
  - FilterElementIdRule Class
  - FilterGlobalParameterAssociationRule Class
  - FilterIntegerRule Class
  - FilterInverseRule Class
  - FilterNumericEquals Class
  - FilterNumericGreater Class
  - FilterNumericGreaterOrEqual Class
  - FilterNumericLess Class
  - FilterNumericLessOrEqual Class
  - FilterNumericRuleEvaluator Class
  - FilterNumericValueRule Class
  - FilterOperatorAndTextString Class
  - FilterRule Class
  - FilterStringBeginsWith Class
  - FilterStringContains Class
  - FilterStringEndsWith Class
  - FilterStringEquals Class
  - FilterStringGreater Class
  - FilterStringGreaterOrEqual Class
  - FilterStringLess Class
  - FilterStringLessOrEqual Class
  - FilterStringRule Class
  - FilterStringRuleEvaluator Class
  - FilterValueRule Class
  - FindReferenceTarget Enumeration
  - FitDirectionType Enumeration
  - FittingAndAccessoryCalculationType Enumeration
  - FittingAngleUsage Enumeration
  - Floor Class
  - FloorFace Enumeration
  - FloorType Class
  - FlowDirectionType Enumeration
  - FolderItemInfo Class
  - FootPrintRoof Class
  - ForgeTypeId Class
  - Form Class
  - FormArray Class
  - FormArrayIterator Class
  - FormatOptions Class
  - FormatStatus Enumeration
  - FormattedText Class
  - FormatValueOptions Class
  - FormulaManager Class
  - FormUtils Class
  - Frame Class
  - FramingShapeClassification Enumeration
  - FreeFormElement Class
  - GBXMLExportOptions Class
  - GBXMLImportOptions Class
  - GenericForm Class
  - GenericImportOptions Class
  - GeomCombination Class
  - GeomCombinationSet Class
  - GeomCombinationSetIterator Class
  - GeometryCreationUtilities Class
  - GeometryElement Class
  - GeometryInstance Class
  - GeometryObject Class
  - GlobalParameter Class
  - GlobalParametersManager Class
  - GradientBackgroundSettings Class
  - GraphicsStyle Class
  - GraphicsStyleType Enumeration
  - Grid Class
  - GridNode Structure
  - GridNodeLocation Enumeration
  - GridSegmentDirection Enumeration
  - GridType Class
  - Group Class
  - GroupLoadOptions Class
  - GroupNode Class
  - GroupSet Class
  - GroupSetIterator Class
  - GroupType Class
  - GroupTypeId Class
  - GuidEnum Class
  - HasNoValueFilterRule Class
  - HasValueFilterRule Class
  - HermiteFace Class
  - HermiteSpline Class
  - HermiteSplineTangents Class
  - HermiteSurface Class
  - HiddenLineViewsType Enumeration
  - HomeCamera Class
  - HorizontalAlign Enumeration
  - HorizontalAlignmentStyle Enumeration
  - HorizontalTextAlignment Enumeration
  - HostedSweep Class
  - HostedSweepType Class
  - HostObjAttributes Class
  - HostObject Class
  - HostObjectUtils Class
  - ICentralLockedCallback Interface
  - IConnector Interface
  - ICustomFieldProperties Interface
  - IDataConversionMonitor Interface
  - IDuplicateTypeNamesHandler Interface
  - IExportContext Interface
  - IExportContext2D Interface
  - IExportContextBase Interface
  - IExtension Interface
  - IExternalDBApplication Interface
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Revit .NET 8 Upgrade Tips

FamilyManager.AddParameter(String, ForgeTypeId, ForgeTypeId, Boolean) Method

Revit 2025.3 API

FamilyManagerAddParameter(String, ForgeTypeId, ForgeTypeId, Boolean) Method

Add a new family parameter with a given name.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)

Syntax

public FamilyParameter AddParameter(
	string parameterName,
	ForgeTypeId groupTypeId,
	ForgeTypeId specTypeId,
	bool isInstance
)

Public Function AddParameter ( 
	parameterName As String,
	groupTypeId As ForgeTypeId,
	specTypeId As ForgeTypeId,
	isInstance As Boolean
) As FamilyParameter

public:
FamilyParameter^ AddParameter(
	String^ parameterName, 
	ForgeTypeId^ groupTypeId, 
	ForgeTypeId^ specTypeId, 
	bool isInstance
)

member AddParameter : 
        parameterName : string * 
        groupTypeId : ForgeTypeId * 
        specTypeId : ForgeTypeId * 
        isInstance : bool -> FamilyParameter

Parameters

parameterName String: The name of the new family parameter.
groupTypeId ForgeTypeId: The identifier of the new family parameter's parameter group.
specTypeId ForgeTypeId: The type of new family parameter.
isInstance Boolean: Indicates if the new family parameter is instance or type.

Return Value

FamilyParameter
If creation was successful the new parameter is returned, otherwise an exception with failure information will be thrown.

Exceptions

Exception	Condition
ArgumentNullException	Thrown when the input argument-"parameterName"-is .
ArgumentException	Thrown when the input argument-"parameterName"-is already in use, or when the input argument -"specTypeId" is an invalid type, or the input parameter group cannot be assigned to the new parameter.
InvalidOperationException	Thrown when the family parameter creation failed. Or trying to add an instance parameter of image type.

Remarks

This method can work even without any family type, but it cannot be assigned the value via FamilyManager.Set methods when there is no current type. To add a parameter of family type use the AddParameter overload that accepts a category instead.

Reference

FamilyManager Class

AddParameter Overload

Autodesk.Revit.DB Namespace

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M:Autodesk.Revit.DB.FamilyManager.AddParameter(System.String,Autodesk.Revit.DB.ForgeTypeId,Autodesk.Revit.DB.ForgeTypeId,System.Boolean)