Make Datagridview header bold

Dear Experts

I am using following codes to format datagridview column headers,
that works fine.
My question is: how to make all headings bold? (bold header row)
Please help

Code:

---

With DataGridView1.ColumnHeadersDefaultCellStyle
            .Alignment = DataGridViewContentAlignment.MiddleCenter
            .BackColor = Color.CornflowerBlue
            .ForeColor = Color.Cornsilk
            .Font = New Font(.Font.FontFamily, .Font.Size, _
            .Font.Style Or FontStyle.Bold, GraphicsUnit.Point)
        End With

---

Take a look at this...

http://social.msdn.microsoft.com/For...a-f38984d93d12