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IExportContext Interface

IExport Context Interface

An interface that is used in custom export to process a Revit model.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax 
public interface IExportContext

The IExportContext type exposes the following members.

Methods
Name Description
Public method Finish This method is called at the very end of the export process, after all entities were processed (or after the process was cancelled).
Public method IsCanceled This method is queried at the beginning of every element.
Public method Code example OnElementBegin This method marks the beginning of an element to be exported.
Public method OnElementEnd This method marks the end of an element being exported.
Public method Code example OnFaceBegin This method marks the beginning of a Face to be exported.
Public method OnFaceEnd This method marks the end of the current face being exported.
Public method Code example OnInstanceBegin This method marks the start of processing of an instance node (e.g. a family instance).
Public method OnInstanceEnd This method marks the end of processing of an Instance Node (e.g. a family instance).
Public method Code example OnLight This method marks the beginning of export of a light which is enabled for rendering.
Public method Code example OnLinkBegin This method marks the beginning of a link instance to be exported.
Public method OnLinkEnd This method marks the end of a link instance being exported.
Public method Code example OnMaterial This method marks a change of the material.
Public method Code example OnPolymesh This method is called when a tessellated polymesh of a 3d face is being output.
Public method OnRPC This method marks the beginning of export of an RPC object.
Public method Code example OnViewBegin This method marks the beginning of a 3D view to be exported.
Public method OnViewEnd This method marks the end of a 3D view being exported.
Public method Code example Start This method is called at the very start of the export process, still before the first entity of the model was send out.
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Remarks

An instance of a class that implements this interface is passed in as a parameter of the CustomExporter constructor. The methods of the context are then called at times of exporting entities of the model.

This is a base class for two other interfaces derived from it: IPhotoRenderContext and IModelExportContext . This base class contains methods that are common to both the leaf interfaces. Although it is still possible to use classes deriving directly from this base interface (for backward compatibility), future applications should implement the new leaf interfaces only.

See Also