I can not print all pages

Question

I need help with programming in C # program SharpDevelop,
as print the full contents of the ranks datagridview with a header as this block of code
google search for prints and works part. I explain:

a. - if the datagridview has less than 22 Rows prints (use class preview) better and complete the road and only one sheet should print
b. - if the datagridview has 59 rows me prints (use class preview) several sheets and I always Printed and cancel all leaves, the contents of the first page
I think I reset any accountant or content of the buffer or something.

The program has a button that calls the routine imprime_inventario.
if they can see the code shown what I show.
I am hoping to help them appreciate their contribution.
Thanks Friends.
Atte.
Matrix
private void imprime_inventario(object sender,  PrintPageEventArgs e)
        {
            ArrayList arrColumnLefts=new ArrayList();
            ArrayList arrColumnWidths=new ArrayList();
            int    iCellHeight=0;
            int    iCount=0;
            bool bFirstPage =true;
            bool bNewPage=true;
            int iTotalWidth=0;
            foreach (DataGridViewColumn dgvGridCol in dataGridView1.Columns) {
                iTotalWidth +=dgvGridCol.Width;
            }
            StringFormat strFormat=new StringFormat();
            strFormat.Alignment=StringAlignment.Near;
            strFormat.LineAlignment=StringAlignment.Center;
            strFormat.Trimming=StringTrimming.EllipsisCharacter;
            int iLeftMargin = e.MarginBounds.Left;
            int iTopMargin = e.MarginBounds.Top;
            bool bMorePagesToPrint=false;
            int iTmpWidth=0;
            int iHeaderHeight=0;
            arrColumnLefts.Clear();
            arrColumnWidths.Clear();
            Font PrintFont=new Font(dataGridView1.Font,FontStyle.Bold);
            if(bFirstPage){
            foreach(DataGridViewColumn GridCol in dataGridView1.Columns) {
                    iTmpWidth=(int)(Math.Floor((double)((double)GridCol.Width/(double)iTotalWidth * (double)iTotalWidth* ((double)e.MarginBounds.Width/(double)iTotalWidth))));
                    iHeaderHeight=(int)(e.Graphics.MeasureString(GridCol.HeaderText,GridCol.InheritedStyle.Font,iTmpWidth).Height)+11;
                    arrColumnLefts.Add(iLeftMargin);
                    arrColumnWidths.Add(iTmpWidth);
                    iLeftMargin +=iTmpWidth;
                }
            }
           
                       
        int iRow =0;
        float linePerPage=(e.MarginBounds.Height/PrintFont.GetHeight(e.Graphics));
        while (iRow <=dataGridView1.Rows.Count-1)  {
                DataGridViewRow GridRow=dataGridView1.Rows[iRow];
                iCellHeight=GridRow.Height+5;
                if(iTopMargin+iCellHeight>=e.MarginBounds.Height+e.MarginBounds.Top){
                    bNewPage=true;
                    bFirstPage=false;
                    bMorePagesToPrint=true;
                    break;
                }
                else{
                    if(bNewPage){
                        e.Graphics.DrawString("MARBETE",new Font(dataGridView1.Font,FontStyle.Bold),Brushes.Black,e.MarginBounds.Left,e.MarginBounds.Top-e.Graphics.MeasureString("MARBETE",new Font(dataGridView1.Font,FontStyle.Bold),e.MarginBounds.Width).Height-13);
                        String strDate =DateTime.Now.ToLongDateString()+""+DateTime.Now.ToShortDateString();
                        e.Graphics.DrawString(strDate,new Font(dataGridView1.Font,FontStyle.Bold),Brushes.Black,e.MarginBounds.Left+(e.MarginBounds.Width-e.Graphics.MeasureString(strDate, new Font(dataGridView1.Font,FontStyle.Bold),e.MarginBounds.Width).Width),e.MarginBounds.Top-e.Graphics.MeasureString("MARBETE",new Font(dataGridView1.Font,FontStyle.Bold),e.MarginBounds.Width).Height-13);
                        iTopMargin=e.MarginBounds.Top;
                        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), strFormat);
                            //new SolidBrush(Color.ForestGreen)
                            iCount++;
                        }
                        bNewPage=false;
                        iTopMargin+=iHeaderHeight;
                    }//Fin If
                    iCount=0;
               
                foreach(DataGridViewCell Cel in GridRow.Cells){
                    if(Cel.Value !=null){
                        e.Graphics.DrawString(Cel.Value.ToString(),Cel.InheritedStyle.Font, new SolidBrush(Cel.InheritedStyle.ForeColor), new RectangleF((int)arrColumnLefts[iCount],(float)iTopMargin,(int)arrColumnWidths[iCount],(float)iCellHeight),strFormat);
                    }
                    e.Graphics.DrawRectangle(Pens.Black,new Rectangle((int)arrColumnLefts[iCount],iTopMargin,(int)arrColumnWidths[iCount],iCellHeight));
                    iCount++;
                   }
                }//fin Else
                iRow++;
                iTopMargin+=iCellHeight;
            }    //Fin while   
        if(bMorePagesToPrint)
            e.HasMorePages=true;
        else
            e.HasMorePages=false;
        }
       
       
void Button2Click(object sender,  EventArgs e)
    {
    PrintPreviewDialog dlg = new PrintPreviewDialog();   
    PrintDocument PD =new PrintDocument();
    PD.PrinterSettings.FromPage=0;
    PD.PrinterSettings.ToPage=0;
    PD.PrinterSettings.PrintRange=PrintRange.AllPages;
    PD.DefaultPageSettings.Landscape=true;
    PD.PrintPage += new PrintPageEventHandler(this.imprime_inventario);   
    dlg.Document=PD;
    dlg.ShowDialog();
    }//Fin boton Imprimir