Namespaces
- Autodesk.Revit.ApplicationServices
- Autodesk.Revit.Attributes
- Autodesk.Revit.Creation
- Autodesk.Revit.DB
- Autodesk.Revit.DB.Analysis
- Autodesk.Revit.DB.Architecture
- Autodesk.Revit.DB.DirectContext3D
  - Camera Class
  - ClipPlane Class
  - DirectContext3DDocumentUtils Class
  - DirectContext3DHandleOverrides Class
  - DirectContext3DHandleSettings Class
  - DrawContext Class
  - EffectInstance Class
  - IDirectContext3DServer Interface
  - IndexBuffer Class
    - IndexBuffer Constructor
    - IndexBuffer Properties
    - IndexBuffer Methods
      - Dispose Method
      - GetIndexStreamLine Method
      - GetIndexStreamPoint Method
      - GetIndexStreamTriangle Method
      - GetMappedHandle Method
      - IsValid Method
      - Map Method
      - Unmap Method
  - IndexLine Class
  - IndexPoint Class
  - IndexPrimitive Class
  - IndexStream Class
  - IndexStreamLine Class
  - IndexStreamPoint Class
  - IndexStreamTriangle Class
  - IndexTriangle Class
  - PrimitiveType Enumeration
  - ProjectionMethod Enumeration
  - Vertex Class
  - VertexBuffer Class
  - VertexFormat Class
  - VertexFormatBits Enumeration
  - VertexPosition Class
  - VertexPositionColored Class
  - VertexPositionNormal Class
  - VertexPositionNormalColored Class
  - VertexStream Class
  - VertexStreamPosition Class
  - VertexStreamPositionColored Class
  - VertexStreamPositionNormal Class
  - VertexStreamPositionNormalColored Class
- Autodesk.Revit.DB.Electrical
- Autodesk.Revit.DB.Events
- Autodesk.Revit.DB.ExtensibleStorage
- Autodesk.Revit.DB.ExternalService
- Autodesk.Revit.DB.Fabrication
- Autodesk.Revit.DB.IFC
- Autodesk.Revit.DB.Infrastructure
- Autodesk.Revit.DB.Lighting
- Autodesk.Revit.DB.Macros
- Autodesk.Revit.DB.Mechanical
- Autodesk.Revit.DB.Plumbing
- Autodesk.Revit.DB.PointClouds
- Autodesk.Revit.DB.Steel
- Autodesk.Revit.DB.Structure
- Autodesk.Revit.DB.Structure.StructuralSections
- Autodesk.Revit.DB.Visual
- Autodesk.Revit.Exceptions
- Autodesk.Revit.UI
- Autodesk.Revit.UI.Events
- Autodesk.Revit.UI.Macros
- Autodesk.Revit.UI.Mechanical
- Autodesk.Revit.UI.Plumbing
- Autodesk.Revit.UI.Selection
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Revit .NET 8 Upgrade Tips

IndexBuffer.Unmap Method

Revit 2026 API

IndexBufferUnmap Method

Unmaps the buffer so that it can be used for rendering.

Namespace: Autodesk.Revit.DB.DirectContext3D
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.0.4.0 (26.0.4.0)

Syntax

public void Unmap()

Public Sub Unmap

public:
void Unmap()

member Unmap : unit -> unit

Exceptions

Exception	Condition
InvalidOperationException	This IndexBuffer is not available because Revit is not currently rendering. In general, this IndexBuffer must be used in the scope of the RenderScene() callback of IDirectContext3DServer.

Reference

IndexBuffer Class

Autodesk.Revit.DB.DirectContext3D Namespace

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