data gridview and data table

[myinstincts]

i am inserting values to my datatable for each button click event..Then i am databinding it to data gridview..But the first value inserted in the gridview is getting overwritten with each button_click event.I dont want this thing to happen.For each button click event the datagridview column should increment once and the new values should get added to the new row in gridview. I think databinding property is the problem..Is there a way to add values to gridview wihtout databinding,so that i can add values to data gridview without the first value gets overwritten?????