C# > DataGridView > DataGridViewButtonColumn
Add DataGridViewButtonColumn to your DataGridView.
To handle button click use CellClickEvent.
Example
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
if (e.ColumnIndex == dataGridView1.Columns["Browse"].Index && e.RowIndex >= 0)
{
}
}