Hi Umang,
It is a planned part of the next version of VB.net
In the meantime if you want that before you can take this.
(Although that can mean in my opinion that you have to do it over again when
it is in a regular version).
All links original from a message from HKW
VB Commenter:
http://www.gotdotnet.com/team/ide/
-> section "VB Commenter"
XML Documentation:
http://www.gotdotnet.com/team/vb/
-> section "XML Documentation"
VBXC - VB.NET XML Commentor:
http://vbxmldoc.tor-erik.net/index.shtml
NDOC (formerly DOC.NET):
http://ndoc.sourceforge.net/
VB.DOC:
http://vb-doc.sourceforge.net/
I hope this helps?
Cor