i have used a link button and write some code on click event of this.
the application is working fine on my system but when i deploy it to server the link button click ebent not fired.

can anybody tell me the reason?

you have to say more details.
Is your webserver configured correctly? are there any errors when displaying the internet explorer for example.
Since you say the app is working well on your dev. machine, it goes to say naturally that your environment (betwixt your dev machine and server) are different. Maybe your web server. but you have to pay attention to your app's behavior on the server and report back any error(s);)

i have used a link button and write some code on click event of this.
the application is working fine on my system but when i deploy it to server the link button click ebent not fired.

can anybody tell me the reason?

if u not set that linkbutton
in html tag runat="server"
then possibility of occuring this error
bt i m damn sure u r not so fool top forget writing this.