Hello folks How can we Drag and drop the PDF Elements using Adobe Acrobat SDK .

That would be a useful product. You will need to do what I have already indicated for your other questions. Study the PDF specification, write a plug-in. I should add that there are no drag and drop methods in the SDK, so you would have to use the platform display services (e.g. GDI) to move representations of the object. This is something I have occasionally thought of doing, but it seemed rather difficult.