DataGridView操作之添加自增列

//冻结将自增长列
this.DataGridView.Columns[0].Frozen = true;

private void DataGridView_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
{
            SolidBrush b = new SolidBrush(this.DataGridView.RowHeadersDefaultCellStyle.ForeColor);
            e.Graphics.DrawString((e.RowIndex + 1).ToString(System.Globalization.CultureInfo.CurrentUICulture), this.DataGridView.DefaultCellStyle.Font, b, e.RowBounds.Location.X + 50, e.RowBounds.Location.Y + 4);
}