问通过仅改变其在c# .net中的属性来在datagridview中插入行号，

EN

<asp:TemplateField>
    <ItemTemplate>
        <%# Container.DataItemIndex + 1 %>
    </ItemTemplate>
</asp:TemplateField>

  private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
        {
            // get the row number in leading zero format, 
            //  where the width of the number = the width of the maximum number
            int RowNumWidth = dataGridView1.RowCount.ToString().Length;
            StringBuilder RowNumber = new StringBuilder(RowNumWidth);
            RowNumber.Append(e.RowIndex + 1);
            while (RowNumber.Length < RowNumWidth)
                RowNumber.Insert(0, "0");

            // get the size of the row number string
            SizeF Sz = e.Graphics.MeasureString(RowNumber.ToString(), this.Font);

            // adjust the width of the column that contains the row header cells 
            if (dataGridView1.RowHeadersWidth < (int)(Sz.Width + 20))
                dataGridView1.RowHeadersWidth = (int)(Sz.Width + 20);

            // draw the row number
               e.Graphics.DrawString(
                RowNumber.ToString(), 
                this.Font, 
                SystemBrushes.ControlText, 
                e.RowBounds.Location.X + 15, 
                e.RowBounds.Location.Y + ((e.RowBounds.Height - Sz.Height) / 2));
        }

myDataGrid.CurrentRow.DefaultCellStyle.BackColor = Color.Yellow;