让DataGridView显示行号

private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)




...{


Rectangle rectangle = new Rectangle(e.RowBounds.Location.X,


e.RowBounds.Location.Y,


dataGridView1.RowHeadersWidth - 4,


e.RowBounds.Height);




TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(),


dataGridView1.RowHeadersDefaultCellStyle.Font,


rectangle,


dataGridView1.RowHeadersDefaultCellStyle.ForeColor,


TextFormatFlags.VerticalCenter | TextFormatFlags.Right);


}