Revit API Documentation

https://revapidocs.com/2025.htm
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Comprehensive API documentation for Autodesk Revit 2025, covering major changes, new features,...
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### STEP Import/Export API Additions

Source: https://revapidocs.com/2025.htm

New functionality for importing, linking, and exporting files in STEP format.

```csharp
Document.Import(String, STEPImportOptions, View)
Document.Link(String, STEPImportOptions, View)
Document.Export(String, String, STEPExportOptions)
```

--------------------------------

### Energy Analysis API Additions - gbXML Export

Source: https://revapidocs.com/2025.htm

New methods and a constructor for exporting gbXML based on conceptual energy analytical models.

```C#
GetMassIds()
```

```C#
GetMassZoneIds()
```

```C#
GBXMLExportOptions(massZoneIds, massIds)
```

--------------------------------

### Electrical API Additions - New Classes

Source: https://revapidocs.com/2025.htm

New classes for electrical analysis, including per-phase data and node data.

```C#
Autodesk.Revit.DB.Electrical.ElectricalPerPhaseData
```

```C#
Autodesk.Revit.DB.Electrical.AnalyticalPowerDistributableNodeData
```

```C#
Autodesk.Revit.DB.Electrical.AnalyticalTransformerData
```

--------------------------------

### Selection API additions - UI Application

Source: https://revapidocs.com/2025.htm

New enum and property related to UI application themes.

```csharp
enum ThemeType {
    CanvasTheme, // Indicates that the ThemeChanged event is triggered by canvas theme change.
    UITheme // Indicates that the ThemeChanged event is triggered by the global UI theme change.
}

// For ThemeChangedEventArgs:
ThemeType ThemeChangedType; // Returns ThemeType enum that indicates the kind of change triggered the current event.
```

--------------------------------

### Reinforcement API Additions - Rebar Constraints

Source: https://revapidocs.com/2025.htm

New methods and enums for creating and managing rebar constraints to surfaces.

```csharp
RebarConstraint.CreateConstraintToSurface()
RebarConstraint.GetSurfaceForConstraintToSurface()
RebarConstraint.IsValidSurfaceToConstraintHandleTo()
RebarConstraint.IsToSurface()
RebarConstraint.GetRebarConstrainedHandle()
RebarConstraint.FlipSideForClearBarSpacingZeroDistanceConstraint()
RebarConstrainedHandle.IsEqual()
RebarConstraintsManager.SetPreferredConstraintsToSurfaceForHandles()
RebarConstraintsManager.SetPreferredConstraint()
RebarConstraintsManager.GetAutomaticConstraintCandidatesForHandle()
```

--------------------------------

### Structure API additions - Bending Details on Drawings

Source: https://revapidocs.com/2025.htm

New methods and properties for enhancing bending details on drawings.

```csharp
// New methods
RebarBendingDetail.AddHosts()
RebarBendingDetail.GetHosts()
RebarBendingDetail.RemoveHosts()
RebarBendingDetail.SetTagRelativePosition()
RebarBendingDetail.SetTagRelativeRotation()
RebarBendingDetail.GetTagRelativePosition()
RebarBendingDetail.GetTagRelativeRotation()
RebarBendingDetail.IsSchematicBendingDetail()
RebarBendingDetail.IsRealisticBendingDetail()
RebarBendingDetail.ResetTagRelativePosition()
RebarBendingDetail.ResetAnnotationPositions()

// New properties
RebarBendingDetailType.SchematicHeight
RebarBendingDetailType.SchematicWidth
RebarBendingDetailType.TagTypeId
RebarBendingDetailType.DisplayMode

// New enum
Autodesk.Revit.DB.Structure.BendingDetailDisplayMode
```

--------------------------------

### PDF Export API Additions

Source: https://revapidocs.com/2025.htm

New API calls for PDF export options and event arguments, enabling background PDF creation.

```csharp
PDFExportOptions.SetExportInBackground()
FileExportedEventArgs.BackgroundOperation
FileExportingEventArgs.BackgroundOperation
```

--------------------------------

### Structure API additions - Analytical Elements

Source: https://revapidocs.com/2025.htm

New methods for managing the local coordinate system of Analytical Elements.

```csharp
AnalyticalElement.IsValidTransform()
AnalyticalElement.SetTransform()
```

--------------------------------

### IFC API Additions - Hybrid Import

Source: https://revapidocs.com/2025.htm

New methods for updating elements previously imported via a Hybrid IFC Link and retrieving element associations.

```C#
IFCHybridImport.UpdateElements()
```

```C#
IFCHybridImport.GetIFCStepIdToElementIdMap()
```

--------------------------------

### Sketched Element API additions - Wall APIs

Source: https://revapidocs.com/2025.htm

New methods for managing end wrapping in Revit walls.

```csharp
Revit.DB.Wall.GetWrappingLocationAsReferences(int locationIndex)
Revit.DB.Wall.GetWrappingLocationAsCurveParameter(int locationIndex)
Revit.DB.Wall.GetValidWrappingLocationIndices()
Revit.DB.Wall.AllowWrappingAtLocation(int locationIndex)
Revit.DB.Wall.DisallowWrappingAtLocation(int locationIndex)
Revit.DB.Wall.IsWrappingAtLocationAllowed(int locationIndex)
```

--------------------------------

### Structure API additions - Analytical Surface

Source: https://revapidocs.com/2025.htm

New method for verifying the contour of an Analytical Surface.

```csharp
AnalyticalSurfaceBase.IsOuterContourValid()
```

--------------------------------

### Dimension API Additions

Source: https://revapidocs.com/2025.htm

New classes and methods for creating radial, linear, and arc length dimensions via the API.

```C#
RadialDimension.Create(Document, View, Reference, XYZ origin, bool isDiameterDimension)
```

```C#
ArcLengthDimension.Create(Document, View, Arc, Reference, Reference firstRef, Reference secondRef)
```

```C#
LinearDimension.Create(Document, View, Line, IList<Reference>)
```

--------------------------------

### Reinforcement API Additions - Rebar Splice Type Options and Rules

Source: https://revapidocs.com/2025.htm

Added functionality for splicing rebar, including new classes and utility methods.

```csharp
RebarBarType.GetLapLength()
RebarBarType.SetLapLength()
RebarBarType.GetAutoCalculatedLapLength()
RebarBarType.SetAutoCalculatedLapLength()
RebarBarType.GetStaggerLength()
RebarBarType.SetStaggerLength()
```

--------------------------------

### IFC API Additions - IFC Category Mapping

Source: https://revapidocs.com/2025.htm

New classes for controlling how Revit categories are mapped to IFC Classes during IFC Export.

```C#
Autodesk.Revit.DB.IFCCategoryTemplate
```

```C#
Autodesk.Revit.DB.ExportIFCCategoryKey
```

```C#
Autodesk.Revit.DB.ExportIFCCategoryInfo
```
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