datagridview右键选中一行

        private void dgvStuName_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right && e.RowIndex > -1 && e.ColumnIndex > -1)
            {
                dgvStuName.Rows[e.RowIndex].Selected = true;
            }
        }