Revit API Docs

https://revapidocs.com/2026.htm
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Comprehensive API documentation for Autodesk Revit 2026, covering all namespaces, classes, methods,...
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### Free Form Rebar Creation

Source: https://revapidocs.com/2026.htm

Added the ability to create Rebar Free Form using server GUIDS.

```C#
Rebar.FreeFormAlignedServerGuid
```

```C#
Rebar.FreeFormSurfaceServerGuid
```

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

### DirectContext3DHandleSettings Color

Source: https://revapidocs.com/2026.htm

Get and set the color override applied to the handle and the associated DirectContext3D graphics.

```C#
DirectContext3DHandleSettings.GetColor()
```

```C#
DirectContext3DHandleSettings.SetColor()
```

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

### ParameterUtils API Additions

Source: https://revapidocs.com/2026.htm

Gets the parameter group identifier corresponding to the given built-in parameter identifier.

```C#
ParameterUtils.GetBuiltInParameterGroupTypeId()
```

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

### SpatialElement API Additions

Source: https://revapidocs.com/2026.htm

Allows users to get the default location of the spatial element. The default location is a point where a spatial element is placed when it is created automatically without specifying a point.

```C#
SpatialElement.GetDefaultLocation()
```

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

### Add-in Manifest Settings for Dependency Isolation

Source: https://revapidocs.com/2026.htm

Sample use of the new manifest flags to control add-in dependency isolation.

```xml
<?xml version="1.0" encoding="utf-8"?>
<RevitAddIns>
<AddIn Type="DBApplication">
<Name>SampleApplication</Name>
<FullClassName>SampleApplication.Application</FullClassName>
<Assembly>SampleApplication.dll</Assembly>
<ClientId>C96B32A3-98C6-4B47-99DA-562E64689C6F</ClientId>
<VendorId>Autodesk</VendorId>
</AddIn>
<ManifestSettings>
<UseRevitContext>False</UseRevitContext>
<ContextName>SampleContextName</ContextName>
</ManifestSettings>
</RevitAddIns>
```

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

### Add-in Management API Additions

Source: https://revapidocs.com/2026.htm

New classes and members for managing add-in settings in Revit.

```csharp
public static AddInsManagerSettings Get();
public AddInItemSettings[] GetAllAddInItemSettings();
public AddInItemSettings GetAddInItemSettings(Guid id);
public AddInItemSettings CreateAddInItemSettings();
public void Save();
public bool DisableAllAddIns;
```

```csharp
public bool Disabled;
public Guid GUID;
public string Name;
public string Vendor;
public double LoadTime;
```

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

### Geometry API Additions - Solid Utilities

Source: https://revapidocs.com/2026.htm

New methods for computing topological and geometrical closure of solids.

```csharp
public static bool ComputeIsTopologicallyClosed(Solid solid);
public static bool ComputeIsGeometricallyClosed(Solid solid);
```

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

### Wall & Compound Structure API Additions - Compound Structure Priority

Source: https://revapidocs.com/2026.htm

New APIs for customizing CompoundStructure layer priority.

```csharp
public int LayerPriority;
public int GetLayerPriority();
public void SetLayerPriority(int priority);
public bool IsValidLayerPriority(int priority);
public void ResetLayerPriority();
public void ResetAllLayersPriorities();
```

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

### Wall & Compound Structure API Additions - Wall Attachments

Source: https://revapidocs.com/2026.htm

New methods for managing wall attachments.

```csharp
public ElementId[] GetAttachmentIds();
public void AddAttachment(ElementId targetId);
public void RemoveAttachment(ElementId targetId);
public void RemoveAttachment(ElementId targetId, AttachmentLocation attachmentLocation);
public bool IsValidTargetAttachment(ElementId targetId);
```

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

### Document API Addition

Source: https://revapidocs.com/2026.htm

New methods for checking edit mode and retrieving the active edit mode type.

```csharp
public bool IsInEditMode();
public EditModeType GetActiveEditMode();
```

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

### IFC Parameter Mapping Classes and Enums

Source: https://revapidocs.com/2026.htm

Allows control over the way that Revit parameters are mapped to IFC properties, including the ability to create, retrieve and modify IFC parameter mapping templates.

```C#
Autodesk.Revit.DB.IFCParameterTemplate
```

```C#
Autodesk.Revit.DB.IFCPropertyMappingInfo
```

```C#
Autodesk.Revit.DB.PropertySelectionType
```

```C#
Autodesk.Revit.DB.PropertySetupType
```

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

### AnalyticalElement Connectors

Source: https://revapidocs.com/2026.htm

Retrieves the connector manager of a given structural analytical element. It will return connectors of Domain.StructuralAnalytical.

```C#
AnalyticalElement.ConnectorManager
```

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

### Ceiling API Additions

Source: https://revapidocs.com/2026.htm

Returns the geometric representation of the ceiling grid, optionally including the ceiling boundary.

```C#
Revit.DB.Ceiling.GetCeilingGridLine()
```

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

### Temporary Graphics Manager

Source: https://revapidocs.com/2026.htm

Sets the tooltip for the given temporary graphics object.

```C#
TemporaryGraphicsManager.SetTooltip()
```

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

### Import/Export Data Exchange API Additions - NurbsSurfaceData

Source: https://revapidocs.com/2026.htm

New element-wise accessors for NurbsSurfaceData to avoid deep-copying large arrays.

```csharp
public int GetNumberOfKnotsU();
public double GetKnotU(int index);
public int GetNumberOfKnotsV();
public double GetKnotV(int index);
public int GetNumberControlPoints();
public XYZ GetControlPoint(int index);
public int GetNumberOfWeights();
public double GetWeight(int index);
```

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

### ExporterIFC Utilities

Source: https://revapidocs.com/2026.htm

Returns the translation for the family instance's adjustment within an Assembly.

```C#
ExporterIFC.GetFamilyInstanceAssemblyOffset(FamilyInstance)
```

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

### Structural Settings Boundary Setback

Source: https://revapidocs.com/2026.htm

Allows users to disable the auto-join setback distances for all structural steel framing, slanted columns, trusses, beam systems and braces.

```C#
StructuralSettings.BoundarySetbackDisabledForSteelElements()
```

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

### TemporaryViewModes API Additions

Source: https://revapidocs.com/2026.htm

Represents the current state of the Accelerated Graphics mode in the associated view.

```C#
TemporaryViewModes.AcceleratedGraphicsMode
```

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

### Toposolid Subdivision

Source: https://revapidocs.com/2026.htm

Creates a Toposolid subdivision element with the input toposolid as its host, and a specified type to be used for the new subdivision.

```C#
Toposolid.CreateSubDivision(Document, ElementId, IList<CurveLoop>)
```

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

### DirectContext3D FlushBuffer Update

Source: https://revapidocs.com/2026.htm

The index buffer parameter input has been updated to optional, where null is permitted, but only if indexCount is also 0.

```C#
DirectContext3D.FlushBuffer()
```

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

### Failure API Addition

Source: https://revapidocs.com/2026.htm

Returns the user-visible name for the severity of a warning.

```C#
LabelUtils.GetFailureSeverityName()
```

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

### Viewport API Deprecations

Source: https://revapidocs.com/2026.htm

This table shows deprecated ViewPositioning capabilities and their replacements for managing viewport positions on a sheet.

```csharp
Deprecated member| Replacement member  
---|---
Viewport.ViewportPositioning| Viewport.ViewAnchor
```

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

### SpatialElementTag MoveToReferenceLocation

Source: https://revapidocs.com/2026.htm

Allows users to move the SpatialElementTag to the location of SpatialElement that the tag is associated with.

```C#
SpatialElementTag.MoveToReferenceLocation()
```

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

### SpatialElement Recenter

Source: https://revapidocs.com/2026.htm

Allows users to move the spatial element to its default location.

```C#
SpatialElement.Recenter()
```

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

### Load Combinations Enum Values

Source: https://revapidocs.com/2026.htm

Several new values have been added to the Autodesk.Revit.DB.Structure.LoadCombinationState enum.

```C#
ServiceabilityQuasiPermanent
```

```C#
ServiceabilityFrequent
```

```C#
ServiceabilityRare
```

```C#
Accidental
```

```C#
Special
```

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

### Browser Organization API Deprecations

Source: https://revapidocs.com/2026.htm

This table shows deprecated properties in the Browser Organization API that may be removed in later versions of Revit.

```csharp
Deprecated member(s)| Replacement member(s)| Notes  
---|---|---
FolderItemInfo.ElementId| FolderItemInfo.GetGroupingParameterIdPath()| The parameter Id path used to determine the folder items in the browser.
```

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

### Toposolid Cut Void Stability

Source: https://revapidocs.com/2026.htm

Accesses the option to use random shifting to find a successful Boolean operation for cutting and joining Toposolid objects.

```C#
Toposolid.IsCutVoidStabilityEnabled(Document)
```

```C#
Toposolid.SetCutVoidStability(Document, bool)
```

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

### Free Form Rebar Handles Enums

Source: https://revapidocs.com/2026.htm

Correspond to the values that might be returned by RebarConstrainedHandle.GetCustomHandleTag() for Aligned or Surface Free Form Rebar.

```C#
SurfaceDistributionRebarHandles
```

```C#
AlignedDistributionRebarHandles
```

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

### Independent Tag API Addition

Source: https://revapidocs.com/2026.htm

Allows users to determine if the IndependentTag object has a valid tag text.

```C#
Autodesk.Revit.DB.IndependentTag.HasTagText()
```

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

### Hub Point ID

Source: https://revapidocs.com/2026.htm

Returns the id of the associated Point element.

```C#
Hub.GetPointId()
```

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

### Curve Intersection API Deprecations

Source: https://revapidocs.com/2026.htm

This table shows deprecated Curve.Intersect() overloads and their replacements for more accurate curve intersection determination.

```csharp
Deprecated member(s)| Replacement member(s)  
---|---
SetComparisonResult Curve.Intersect (Curve otherCurve)| CurveIntersectResult Curve.Intersect(Curve otherCurve, CurveIntersectionResultOption.Simple)
SetComparisonResult Curve.Intersect (Curve otherCurve, IntersectionResultArray intersections)| CurveIntersectResult Curve.Intersect(Curve otherCurve, CurveIntersectionResultOption.Detailed)
```
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