how to print vertically

strFormat1.FormatFlags = StringFormatFlags.DirectionVertical;

DataGridView1.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.EnableResizing;
            DataGridView1.ColumnHeadersHeight = 50;
            DataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCellsExceptHeader;

            // Here we attach an event handler to the cell painting event
            DataGridView1.CellPainting += new DataGridViewCellPaintingEventHandler(DataGridView1_CellPainting);</pre>

private void DataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
        {

            // check that we are in a header cell!
            if (e.RowIndex == -1 && e.ColumnIndex >= 0)
            {
                e.PaintBackground(e.ClipBounds, true);
                Rectangle rect = this.DataGridView1.GetColumnDisplayRectangle(e.ColumnIndex, true);
                Size titleSize = TextRenderer.MeasureText(e.Value.ToString(), e.CellStyle.Font);
                if (this.DataGridView1.ColumnHeadersHeight < titleSize.Width)
                {
                    this.DataGridView1.ColumnHeadersHeight = titleSize.Width;
                }

                e.Graphics.TranslateTransform(0, titleSize.Width);
                e.Graphics.RotateTransform(-90.0F);

                // This is the key line for bottom alignment - we adjust the PointF based on the 
                // ColumnHeadersHeight minus the current text width. ColumnHeadersHeight is the
                // maximum of all the columns since we paint cells twice - though this fact
                // may not be true in all usages!   
                e.Graphics.DrawString(e.Value.ToString(), this.Font, Brushes.Black, new PointF(rect.Y - (sbsDataGridView1.ColumnHeadersHeight - titleSize.Width), rect.X));

                // The old line for comparison
                //e.Graphics.DrawString(e.Value.ToString(), this.Font, Brushes.Black, new PointF(rect.Y, rect.X));


                e.Graphics.RotateTransform(90.0F);
                e.Graphics.TranslateTransform(0, -titleSize.Width);
                
                e.Handled = true;
            }

        }

foreach (DataGridViewColumn GridCol in DataGridView1.Columns)
{
    e.Graphics.FillRectangle(new SolidBrush(Color.LightGray),
        new Rectangle((int)arrColumnLefts[iCount], iTopMargin,
        (int)arrColumnWidths[iCount], iHeaderHeight));

    e.Graphics.DrawRectangle(Pens.Black,
        new Rectangle((int)arrColumnLefts[iCount], iTopMargin,
        (int)arrColumnWidths[iCount], iHeaderHeight));



    e.Graphics.DrawString(GridCol.HeaderText, GridCol.InheritedStyle.Font,
        new SolidBrush(GridCol.InheritedStyle.ForeColor),
        new RectangleF((int)arrColumnLefts[iCount], iTopMargin,
        (int)arrColumnWidths[iCount], iHeaderHeight), strFormat1);


    iCount++;
}


private void printDocument1_BeginPrint(object sender, PrintEventArgs e)

{

try
{
iRow = 0;
strFormat1 = new StringFormat();
strFormat1.Alignment = StringAlignment.Near;
strFormat1.LineAlignment = StringAlignment.Center;