/// <summary>
/// This method initiates a custom export process for a given 3D view.
/// </summary>
internal void ExportA3DView(Document document, View3D a3DView)
{
   // Instantiate an export context - the class that receives the output data during 
   // export process. The context class must implement the IExportContext interface.
   MyExportContext context = new MyExportContext(document);

   // Create an instance of a custom exporter by giving it a document and the context.
   CustomExporter exporter = new CustomExporter(document, context);

   // Optionally set attributes that should apply to the export process. For example:

   // a) Exclude OnFaceBegin and OnFaceEnd method from being invoked in the export
   //    context if data about faces and edges are not relevant to the export.
   //    Excluding face nodes would dramatically speed up the export process.
   //    Note: Excluding faces just excludes the calls, not the actual processing of
   //    face tessellation. Meshes of the faces will still be received by the context.
   exporter.IncludeFaces = false;

   // b) Set TRUE or FALSE to abort the export process should an error occur
   exporter.ShouldStopOnError = true;

   // Initiate the export process by calling one of Exporter's 'export' method,
   // in this case the one that takes a single 3D view as an argument.
   exporter.Export(a3DView);
}

' <summary>
' This method initiates a custom export process for a given 3D view.
' </summary>
Friend Sub ExportA3DView(document As Document, a3DView As View3D)
    ' Instantiate an export context - the class that receives the output data during 
    ' export process. The context class must implement the IExportContext interface.
    Dim context As New MyExportContext(document)

    ' Create an instance of a custom exporter by giving it a document and the context.
    Dim exporter As New CustomExporter(document, context)

    ' Optionally set attributes that should apply to the export process. For example:


    ' a) Exclude OnFaceBegin and OnFaceEnd method from being invoked in the export
    '    context if data about faces and edges are not relevant to the export.
    '    Excluding face nodes would dramatically speed up the export process.
    '    Note: Excluding faces just excludes the calls, not the actual processing of
    '    face tessellation. Meshes of the faces will still be received by the context.
    exporter.IncludeFaces = False

    ' b) Set TRUE or FALSE to abort the export process should an error occur
    exporter.ShouldStopOnError = True

    ' Initiate the export process by calling one of Exporter's 'export' method,
    ' in this case the one that takes a single 3D view as an argument.
    exporter.Export(a3DView)
End Sub