Download captured HTML Div as PDF and also send as PDF attachment to email

Question

I want to achieve 2 things:

Capture HTML, convert to Image and download as PDF
Send the captured and converted HTML div as PDF attachment to email

When I tried capturing the entire div and convert into image and download as PDF but it appears the ScaleToFit size makes the captured contents smaller. Please what Measurement should I use to make the pDF image looks like the original ?

When I tried to increase ScaleToFit from

image.ScaleToFit(500f, 1000f);

to this

 img.ScaleToFit(500f, 1200f);

But it did not work.

There are two codes: The first code is to download as PDF, Second code Sends as attachment to email

        protected void ConvertTopdf(object sender, EventArgs e)
        {
            string imagedata = InvoiceimgData.Value;
            string convert = imagedata.Replace("data:image/png;base64,", String.Empty);
            byte[] imagebytes = Convert.FromBase64String(convert);
            //Initialize the PDF document object.
            using (Document pdfDoc = new Document())
            {
                PdfWriter writer = PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
                pdfDoc.Open();

                //Add the Image file to the PDF document object.
                iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(imagebytes);
                img.SetDpi(100, 100);

                img.ScaleToFit(500f, 1200f);
                pdfDoc.Add(img);
                pdfDoc.Close();

                //Download the PDF file.
                Response.ContentType = "application/pdf";
                Response.AddHeader("content-disposition", "attachment;filename=" + nameLbl.Text + " Invoice.pdf");
                Response.Cache.SetCacheability(HttpCacheability.NoCache);
                Response.Write(pdfDoc);
                Response.End();
            }
        }

        protected void ExportToMail(object sender, EventArgs e)
        {
            string base64 = Request.Form[InvoiceimgData.UniqueID].Split(',')[1];
            byte[] Bytes = Convert.FromBase64String(base64);
            iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(Bytes);
            image.SetDpi(100, 100);
            image.ScaleToFit(500f, 1000f);

            MailMessage mm = new MailMessage();
            mm.From = new MailAddress("myemail@mail.com");
            string sentFrom = Lblname.Text;
            string[] ToAddress = TextBox1.Text.Split(',');
            foreach (string n in ToAddress)
            {
                mm.To.Add(new MailAddress(n));
            }
            mm.Subject = "INVOICE from " + sentFrom;
            mm.Body = bodyMail.Text;
            mm.Attachments.Add(new Attachment(new MemoryStream(Bytes), "Invoice.pdf"));
            mm.IsBodyHtml = true;
            SmtpClient smtp = new SmtpClient();
            smtp.Host = "relay-hosting.secureserver.net";
            smtp.EnableSsl = true;
            NetworkCredential NetworkCred = new NetworkCredential();
            NetworkCred.UserName = "myemail@mail.com";
            NetworkCred.Password = "*****************";
            smtp.UseDefaultCredentials = true;
            smtp.Credentials = NetworkCred;
            smtp.Port = 25;
            smtp.Send(mm);
            ClientScript.RegisterStartupScript(GetType(), "alert", "alert('Invoice sent to Recipient(s)');", true);
        }

Javascript

HTML

(The Div tag used here has no contents in it because I am just presenting a sample)

Accepted Answer

Hi @Donald Symmons,

You can use img.ScaleAbsolute(500, 400); The number inside you can change according to your content.

Below is an example of my simple test.

protected void ConvertTopdf(object sender, EventArgs e)
{
    string imagedata = InvoiceimgData.Value;
    string convert = imagedata.Replace("data:image/png;base64,", String.Empty);
    byte[] imagebytes = Convert.FromBase64String(convert);
    //Initialize the PDF document object.
    using (Document pdfDoc = new Document())
    {
        PdfWriter writer = PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
        pdfDoc.Open();
        //Add the Image file to the PDF document object.
        iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(imagebytes);
        
        img.ScaleAbsolute(500, 400);
        pdfDoc.Add(img);
        pdfDoc.Close();
        //Download the PDF file.
        Response.ContentType = "application/pdf";
        Response.AddHeader("content-disposition", "attachment;filename=" + nameLbl.Text + " Invoice.pdf");
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.Write(pdfDoc);
        Response.End();
    }
}
protected void ExportToMail(object sender, EventArgs e)
{
    string imagedata = InvoiceimgData.Value;
    string convert = imagedata.Replace("data:image/png;base64,", String.Empty);
    byte[] imagebytes = Convert.FromBase64String(convert);
    Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 10f);
    using (MemoryStream memoryStream = new MemoryStream())
    {
        PdfWriter writer = PdfWriter.GetInstance(pdfDoc, memoryStream);
        pdfDoc.Open();
        iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(imagebytes);
        img.ScaleAbsolute(500, 400);
        pdfDoc.Add(img);
        pdfDoc.Close();
        byte[] bytes = memoryStream.ToArray();
        memoryStream.Close();
        SmtpClient smtp = new SmtpClient();
        smtp.UseDefaultCredentials = false;
        smtp.Credentials = new NetworkCredential("****", "***");
        smtp.Port = 25;
        smtp.Host = "smtp.office365.com";
        smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
        smtp.EnableSsl = true;
        MailMessage mm = new MailMessage();
        mm.From = new MailAddress("****");
        string sentFrom = "text";
        string[] ToAddress = TextBox1.Text.Split(',');
        foreach (string n in ToAddress)
        {
            mm.To.Add(new MailAddress(n));
        }
        mm.Subject = "INVOICE from " + sentFrom;
        mm.Body = "text";
        mm.Attachments.Add(new Attachment(new MemoryStream(bytes), "Invoice.pdf"));
        mm.IsBodyHtml = true;
        smtp.Send(mm);
        ClientScript.RegisterStartupScript(GetType(), "alert", "alert('Invoice sent to Recipient(s)');", true);
    }
}

Best regards,
Lan Huang

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Download captured HTML Div as PDF and also send as PDF attachment to email

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