Bloking websites using C#

Question

How can I Block accessing of particular websites over the Network using C#

Jignesh Trivedi · Answer

hi, I think, it can be done by some setting on server or DNS.
please refer following link it might help you http://www.grouppolicy.biz/2010/07/how-to-use-group-policy-to-allow-or-block-urls/
http://www.networksteve.com/forum/topic.php/How_to_block_sites_in_2008_server/?TopicId=6160&Posts=6

Praveen Kesarwani · Answer

actually I want to develop a windows application using C# for restricting the access of some particular social networking sites over the network in my Office.

Pankaj Pandey · Answer

hii
could you explain a little more,Is any page ,website or server that you want to safe from listed websites?