DataGridView加上列序號

        /// <summary>
        /// DataGridView加上列序號
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void dataViewSync_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
        {
            Rectangle rectangle = new Rectangle(e.RowBounds.Location.X,
                                    e.RowBounds.Location.Y,
                                    dataViewSync.RowHeadersWidth - 4,
                                    e.RowBounds.Height);

            TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(),
                                    dataViewSync.RowHeadersDefaultCellStyle.Font,
                                    rectangle,
                                    dataViewSync.RowHeadersDefaultCellStyle.ForeColor,
                                    TextFormatFlags.VerticalCenter | TextFormatFlags.Right);
        }