how to block the particular website using asp.net

Question

 Hi All,

 

Good Day!!!,

 

Hi Actually my thought  i developed one website. the website open the browse,so  that here i need when open mysite in browser the browser not Suppoted like that facebook,Tweeter using Asp.net And C# code is Possible????? Actualy i dont know, Give me suggestions.....

 

 Thanks & Regards,

subbareddy.