how to generate pdf file dynamically on click of a link button without loading the page

I have implemented this, and I hope someone else can do it as well. I have listed my code below.

    using iTextSharp.text;
    using iTextSharp.text.pdf;
    using iTextSharp.text.html;
    using iTextSharp.text.html.simpleparser;

Import the above DLL

string attachment = "attachment; filename=" + "File Name" + ".pdf";
    Response.ClearContent();
    Response.AddHeader("content-disposition", attachment);
    Response.ContentType = "application/pdf";
    StringWriter stw = new StringWriter();
    HtmlTextWriter htextw = new HtmlTextWriter(stw);
    htextw.AddStyleAttribute("font-size", "7pt");
    htextw.AddStyleAttribute("color", "Black");
    Page pg = new Page();
    HtmlForm frm = new HtmlForm();
    pg.EnableEventValidation = false;

    pg.RenderControl(htextw);
    Document document = new Document();
    document = new Document(PageSize.A4, 5, 5, 15, 5);
    FontFactory.GetFont("Arial", 50, iTextSharp.text.BaseColor.BLUE);
    PdfWriter.GetInstance(document, Response.OutputStream);
    document.Open();
    //This is how you can add text in div in a pdf
    Chunk c = new Chunk(TextHere + "\n", FontFactory.GetFont("Verdana", 15));
    Paragraph p = new Paragraph();
    p.Alignment = Element.ALIGN_LEFT;
    p.Add(c); p.Add(c1);
    // This is how you can generate table and can set proprties
    PdfPTable table = new PdfPTable(2);
    table.WidthPercentage = 100;
    //Bill No and Bill Date
    PdfPCell pdfcell1 = new PdfPCell(new Phrase("Text in TAble" + "TExt From Database"));
    pdfcell1.Border = iTextSharp.text.Rectangle.BOTTOM_BORDER | iTextSharp.text.Rectangle.TOP_BORDER;
    table.AddCell(pdfcell1);
    PdfPCell pdfcell = new PdfPCell(new Phrase("Text in TAble" + "TExt From Database"));
    pdfcell.Border = iTextSharp.text.Rectangle.BOTTOM_BORDER | iTextSharp.text.Rectangle.TOP_BORDER;
    pdfcell.HorizontalAlignment = Element.ALIGN_RIGHT;
    table.AddCell(pdfcell);

    document.Add(p);
    document.Add(table);
    document.Add(tablegrid);
    StringReader str = new StringReader(stw.ToString());
    HTMLWorker htmlworker = new HTMLWorker(document);
    htmlworker.Parse(str);

    document.Close();
    Response.Write(document);