c# datagridview1 定位到展示位置

string AAA = textBox1.Text;
for (int i = 0; i < dataGridView1.RowCount; i++)
{
    if (dataGridView1.Rows[i].Cells["商品id"].Value.ToString().Equals(AAA))
    {
        dataGridView1.ClearSelection();
        dataGridView1.FirstDisplayedScrollingRowIndex = i;
        dataGridView1.Rows[i].Selected = true;
        break;
    }
}