add row to grid view

with this code also dont solve my problem:
private void dataGridView2_CellClick(object sender, DataGridViewCellEventArgs e)
{
int i;
if (e.ColumnIndex == 10)
{
//dataGridView1 .ne
// dataGridView1.RowCount = dataGridView1.RowCount + 1;
dataGridView1.Rows.AddCopy(e.row index);
// for (i = 0; i < 11; i++)
// dataGridView1.Rows[e.RowIndex + 1].Cells[i] = dataGridView1.Rows[e.RowIndex].Cells[i];
//}
}