How to export with all categories of 3d view of rvt file to fbx format?

[Anonymous]

I want to export the revit project to fbx formate but as shown in below attachment want to export it in different view for ex. fbx for existing view,demo 3dview, substructure 3d view,pwerspective 3d view.

This export should be done using c# code ,previously for exporting i used following code

UIApplication uiApp = commandData.Application;
Document doc = uiApp.ActiveUIDocument.Document;

ViewSet viewSet = new ViewSet();
viewSet.Insert(doc.ActiveViewSet);

doc.Export("C:/......PATH......", "nameFBXExportedFile", viewSet, new FBXExportOptions());

So help me to export this using programming in c#