DataGridView添加行号

用DataGridView的RowPostPaint事件在RowHeaderCell中绘制行号： RowPostPaint       private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)        {            try            {                //添加行号                 SolidBrush v_SolidBrush = new SolidBrush(dataGridView1.RowHeadersDefaultCellStyle.ForeColor);                int v_LineNo = 0;                v_LineNo = e.RowIndex + 1;                string v_Line = v_LineNo.ToString();                e.Graphics.DrawString(v_Line, e.InheritedRowStyle.Font, v_SolidBrush, e.RowBounds.Location.X + 15, e.RowBounds.Location.Y + 5);            }            catch (Exception ex)            {                MessageBox.Show("添加行号时发生错误，错误信息：" + ex.Message, "操作失败");            }        }