How To add actions to datagridview button control?

i have a button control in datagridview and i need to perform an action if the button is clicked, but i don't know where to write my code..

i'm thinking if i can get the dimensions of the cell that i click on, this might help..

second, i need to use a text property of the command, i tried it from the datagrideview>>edit column but it didn't work...


any ideas?

thanks..:)