为DataGridView添加行号

在DataGridView的RowPostPaint事件中写入以下代码:

 1try
 2  {
 3   //添加行号 
 4  SolidBrush v_SolidBrush = new SolidBrush(dgvInfo.RowHeadersDefaultCellStyle.ForeColor);
 5                int v_LineNo = 0;
 6                v_LineNo = e.RowIndex + 1;
 7
 8                string v_Line = v_LineNo.ToString();
 9
                e.Graphics.DrawString(v_Line, e.InheritedRowStyle.Font, v_SolidBrush, e.RowBounds.Location.X, 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");

            }