Hi @NemKumar. I am not as familiar with accessing presentation related stuff by code as I am other stuff, but after a little exploration, the only mention of a design view I could find related to scenes was the PresentationScene.DesignViewAssociative property, which just has a Boolean type value. I do not see a way to read, set, or change which design view representation that the scene is associated with. And even after getting the PresentationComponent object associated with the scene, I do not see anything useful there either.
Edit: Don't see anything useful under PresentationDocument either.
Wesley Crihfield
(Not an Autodesk Employee)