How to get events of footerpage button of gridview in asp.net

Dear

I am newer to asp.net please help me

I have created gridview in that i addedd column and rows manually

i am not used any datasource.

In footerpage i added a button when the user clicks the button

new the row will have to add  I also written a code for adding new row but on which

event i have to call that procedure.

please help me its urgent.

Thank you.