private void dataGridViewInventory_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)        {           var dgv = sender as DataGridView;             if(dgv != null)             {
                    System.Drawing.Rectangle rectangle = new System.Drawing.Rectangle(e.RowBounds.Location.X, e.RowBounds.Location.Y, dgv.RowHeadersWidth, e.RowBounds.Height);                 TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(), dgv.RowHeadersDefaultCellStyle.Font, rectangle, dgv.RowHeadersDefaultCellStyle.ForeColor, TextFormatFlags.VerticalCenter | TextFormatFlags.Right);             }        }