How to hide pdf layer

hi all,

can any body suggest how to hide the pdf layer programmatically in
pdftron.

thanks in advance

Srinidhi

Please see the following previous postings:

How do I remove OCG-s from PDF? Options
http://groups.google.com/group/pdfnet-sdk/browse_thread/thread/6b4ed378cbed2d2b/7540066a8a72137a

How do I delete an OCG/layer completely from PDF?
  http://groups.google.com/group/pdfnet-sdk/msg/66143ac832a82136