Getting blank page when setting range while printing

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C#

When i set a range while printing eg.from page no 2 to page no 3 and there are total 4 pages in document, then total no of printed pages comes 4 with page no 1 and page 4 as blank, and page no 2 and 3 as printed.
how can i remove those two blank pages.
my code

private void pd_PrintPage(object sender, PrintPageEventArgs ev)
        {
            float linesPerPage = 0;
            float yPos = 0;
            int count = 0;
            float leftMargin = ev.MarginBounds.Left;
            float topMargin = ev.MarginBounds.Top;

            string line = null;

            // Calculate the number of lines per page...
            linesPerPage = ev.MarginBounds.Height / printFont.GetHeight(ev.Graphics);
            if ((range.Checked == true && int.Parse(Startrange.Text) > page))
            {

                while (count < linesPerPage && ((line = streamToPrint.ReadLine()) != null))
                {
                    count++;
                }

            }
            // Print each line of the file...
            if ((all.Checked == true) || (range.Checked == true && int.Parse(Startrange .Text) <= page))
            {
                while (count < linesPerPage && ((line = streamToPrint.ReadLine()) != null))
                {
                    yPos = topMargin + (count * printFont.GetHeight(ev.Graphics));
                    ev.Graphics.DrawString(line, printFont, Brushes.Black, leftMargin,
                        yPos);
                    count++;
                }
            }
            // If more lines exist, print another page...
            if (range.Checked == true && page == int.Parse(Endrange .Text))
            {
                ev.HasMorePages = false;
                return;
            }
            ev.HasMorePages = true;
            page++;
            if ((line != null) && (all.Checked == true))
                ev.HasMorePages = true;
            if ((line == null) && (all.Checked == true))
                ev.HasMorePages = false;
        }