asp.net ทำอย่างไรให้ gridview แบ่งได้ตามในภาพอ่ะครับช่วยทีครับ

Protected Sub GridView_Merge_Header_RowCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowCreated

        If e.Row.RowType = DataControlRowType.Header Then

            Dim oGridView As GridView = DirectCast(sender, GridView)
            Dim oGridViewRow As New GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal)
            Dim oTableCell As New TableCell()

            oGridViewRow.Cells.Add(oTableCell)
            oTableCell = New TableCell()
            oTableCell.Text = ""
            oTableCell.HorizontalAlign = HorizontalAlign.Center
            oTableCell.ColumnSpan = 1
            oGridViewRow.Cells.Add(oTableCell)

            oTableCell = New TableCell()
            oTableCell.Text = ""
            oTableCell.HorizontalAlign = HorizontalAlign.Center
            oTableCell.ColumnSpan = 1
            oGridViewRow.Cells.Add(oTableCell)


            oTableCell = New TableCell()
            oTableCell.Text = "Advan-Re-Imbrusment"
            oTableCell.HorizontalAlign = HorizontalAlign.Center
            oTableCell.ColumnSpan = 5

            oGridViewRow.Cells.Add(oTableCell)

            oTableCell = New TableCell()
            oTableCell.Text = ""
            oTableCell.HorizontalAlign = HorizontalAlign.Center
            oTableCell.ColumnSpan = 1
            oGridViewRow.Cells.Add(oTableCell)


          

            oGridView.Controls(0).Controls.AddAt(0, oGridViewRow)
        End If
    End Sub

protected void GridView_Merge_Header_RowCreated(object sender, System.Web.UI.WebControls.GridViewRowEventArgs e)
{

	if (e.Row.RowType == DataControlRowType.Header) {
		GridView oGridView = (GridView)sender;
		GridViewRow oGridViewRow = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
		TableCell oTableCell = new TableCell();

		oGridViewRow.Cells.Add(oTableCell);
		oTableCell = new TableCell();
		oTableCell.Text = "";
		oTableCell.HorizontalAlign = HorizontalAlign.Center;
		oTableCell.ColumnSpan = 1;
		oGridViewRow.Cells.Add(oTableCell);

		oTableCell = new TableCell();
		oTableCell.Text = "";
		oTableCell.HorizontalAlign = HorizontalAlign.Center;
		oTableCell.ColumnSpan = 1;
		oGridViewRow.Cells.Add(oTableCell);


		oTableCell = new TableCell();
		oTableCell.Text = "Advan-Re-Imbrusment";
		oTableCell.HorizontalAlign = HorizontalAlign.Center;
		oTableCell.ColumnSpan = 5;

		oGridViewRow.Cells.Add(oTableCell);

		oTableCell = new TableCell();
		oTableCell.Text = "";
		oTableCell.HorizontalAlign = HorizontalAlign.Center;
		oTableCell.ColumnSpan = 1;
		oGridViewRow.Cells.Add(oTableCell);




		oGridView.Controls(0).Controls.AddAt(0, oGridViewRow);
	}
}