DeveXPress XtraGrid 删除键删除

private void gridDeliveryDetail_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Delete)
            {
                if (MessageBox.Show("删除行?", "确认", MessageBoxButtons.YesNo) != DialogResult.Yes)
                    return;
                int i = viewDeliveryDetail.FocusedRowHandle;
                if (i >= 0)
                {
                    viewDeliveryDetail.DeleteRow(i);
                }
            }
        }