在DataGridView控件的数据列标题上绘制出额外的数字编号

 

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有许多朋友询问我，如何在DataGridView控件的数据列标题上绘制出额外的数字编号。欲完成这样的处理非常简单，您只需替DataGridViewRow控件的RowPostPaint事件处理例程撰写下列程序代码即可：

 

Private Sub dataGridView1_RowPostPaint(ByVal sender As Object, _
  ByVal e As DataGridViewRowPostPaintEventArgs) _
  Handles DataGridView1.RowPostPaint

  Using b As SolidBrush = _
      New SolidBrush(DataGridView1.RowHeadersDefaultCellStyle.ForeColor)

      e.Graphics.DrawString(e.RowIndex.ToString( _
      System.Globalization.CultureInfo.CurrentUICulture), _
                            DataGridView1.DefaultCellStyle.Font, _
                                                                                 b, _
                                       e.RowBounds.Location.X + 20, _
                                       e.RowBounds.Location.Y + 4)

  End Using
End Sub