iCal method in c#.net for accept ,decline & tentative

Question

Hi there,

  I stucked at a method iCal for sending Meeting request mail with accept ,decline buttons in .ics file through my c# codindg. I am able to send mail with .ice attachment only thing I am not understanding how to users in outlook should have the accept and decline buttons....  when sending meeting request through my outlook the buttons accept & decline were showing but through my application those buttons were not shoing....

could you please anybody help me to solve this task...

Thanks & regards,

vijay