Time being I got answer for my question,
here I am used VB.NET with Acrobat jsobj
Please refer below link for reference
Reference Link : http://livedocs.adobe.com/acrobat_sdk/9.1/Acrobat9_1_HTMLHelp/wwhelp/wwhimpl/js/html/wwhelp.htm?href=JavaScript_SectionPage.70.1.html&accessible=true