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Send PDF to the browser rather than saving to the server - ASP.NET iText 7 C# Web Forms

this is my first time posting on SO
I have been using iText 7 so users of my web app can generate a pdf of a document.
I would like the document sent to the browser so either it gets saved to the user Downloads folder or the user can choose where to save it with the browser save dialog box.
However, all the C# examples I have found require a hard-coded path & file name, so it gets saved on the server rather than client machines.
I have been researching this for a few days now and floundering around with solutions, this is what I have:
public void mtdCreatePDF()
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=print.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
var stream = new MemoryStream();
var writer = new PdfWriter(stream);
var pdf = new PdfDocument(writer);
var document = new Document(pdf);
document.Add(new Paragraph("Hello world!"));
document.Close();
Response.Write(document);
Response.End();
}
This creates print.pdf in browser Downloads folder, but the file is corrupt.
I would be grateful if someone could point out where I am going wrong, the majority of articles in this regard relate to the older itextsharp, and the iText 7 examples have hard-coded file paths and file names.
I have found one possible solution that looks good, but unfortunately it is in Java. I've been floundering around for ages trying to convert it to C#, but I don't know any Java so it's turned into a pig's breakfast. This is the Java solution:
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(baos));
Document doc = new Document(pdfDoc);
doc.add(new Paragraph("Hello world!"));
doc.close();
// setting some response headers
response.setHeader("Expires", "0");
response.setHeader("Cache-Control",
"must-revalidate, post-check=0, pre-check=0");
response.setHeader("Pragma", "public");
// setting the content type
response.setContentType("application/pdf");
// the contentlength
response.setContentLength(baos.size());
// write ByteArrayOutputStream to the ServletOutputStream
OutputStream os = response.getOutputStream();
baos.writeTo(os);
os.flush();
os.close();
Any help would be greatly appreciated.
Thank you

This solution seems to be working perfectly.
public void mtdCreatePDF()
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=print.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
var stream = new MemoryStream();
var writer = new PdfWriter(stream);
var pdf = new PdfDocument(writer);
var document = new Document(pdf);
document.Add(new Paragraph("Hello world!"));
document.Close();
Response.BinaryWrite(stream.ToArray());
Response.End();
}

MVC - Generating multiple PDFs

I am using the following code for generating a PDF file.
It is working good, but now i want to generate 4 PDF's at the same time.
I tried by again initiating Document & repeating the whole code for generating 2nd PDF report, But it generates only 1 PDF.
var document = new Document(PageSize.A4, 50, 50, 25, 25);
// Create a new PdfWrite object, writing the output to a MemoryStream
var output = new MemoryStream();
var writer = PdfWriter.GetInstance(document, output);
// Open the Document for writing
document.Open();
string contents = System.IO.File.ReadAllText(Server.MapPath("~/Reports/Original.html"));
var parsedHtmlElements = HTMLWorker.ParseToList(new StringReader(contents), null);
foreach (var htmlElement in parsedHtmlElements)
document.Add(htmlElement as IElement);
document.Close();
Response.ContentType = "application/pdf";
Response.AddHeader("Content-Disposition", string.Format("attachment;filename=Receipt-{0}.pdf", "Report"));
Response.BinaryWrite(output.ToArray());
return View();
How to generate multiple PDF's?

You are outputting the bytes as a response, so you would never be able of generating 2 different files in one response. Only one response per request.
If you want the user to download 2 different PDFs at the same time you could call the controller using javascript from the view.

iTextSharp not preserving PDF styling after adding js

I have an set of PDF files created before using different system.
Those are styled correctly, (using Arial font, bold and normal) - PDF contains Swedish characters, and everything works when I print it.
However, I've been working on an solution to not show the pdf file itself to the user, just start the print dialogue. I have used iTextSharp to include JS code what will automatically print the PDF once started.
Method that adds the JS to the provided file and sends it to the user:
protected void StreamPdf(string pdfSource)
{
var outputStream = new MemoryStream();
var pdfReader = new PdfReader(pdfSource);
var pdfStamper = new PdfStamper(pdfReader, outputStream);
//Add the auto-print javascript
var writer = pdfStamper.Writer;
writer.AddJavaScript(GetAutoPrintJs());
pdfStamper.Close();
var content = outputStream.ToArray();
outputStream.Close();
Response.ContentType = "application/pdf";
Response.BinaryWrite(content);
Response.End();
outputStream.Close();
outputStream.Dispose();
}
Now the thing is - after writing the file back using response, I am loosing the formatting - text that was bold before now is normal, and regional characters are lost (displaying empty squares instead).
Is there any possibility to preserve the formatting?

asp.net open word document

I try to open a word document with c#.
When I open the document, the page is blocked after.
Here is the code :
HttpContext.Current.Response.Write(temp);
//HttpContext.Current.Response.End();
//HttpContext.Current.Response.Flush();
//HttpContext.Current.Response.Write(sw.ToString());
//HttpContext.Current.Response.clear();
//HttpContext.Current.Response.End();
//HttpContext.Current.Response.SuppressContent = true;
//HttpContext.Current.Response.Close();
//Response.Redirect(Page.Request.Url.AbsolutePath.Substring(0, Page.Request.Url.AbsolutePath.LastIndexOf("/")) + "/PIEditor.aspx?PostID=" + Request.Params["PostID"], true);`
//HttpContext.Current.Response.End();
As you see, I tried different options but without result, the window for opening or saving the document is displayed but I can't click on any buttons the page after. It looks like it is deactivated or stopped.

you can try GemBox.Document component to export Word document from ASP.NET application, if that is what you are trying to do.
Here is a sample C# code that should go in ASPX page code behind:
// Create a new empty document.
DocumentModel document = new DocumentModel();
// Add document content.
document.Sections.Add(new Section(document, new Paragraph(document, "Hello World!")));
// Microsoft Packaging API cannot write directly to Response.OutputStream.
// Therefore we use temporary MemoryStream.
using (MemoryStream documentStream = new MemoryStream())
{
document.Save(documentStream, SaveOptions.DocxDefault);
// Stream file to browser.
Response.Clear();
Response.ContentType = "application/vnd.openxmlformats";
Response.AddHeader("Content-Disposition", "attachment; filename=Document.docx");
documentStream.WriteTo(Response.OutputStream);
Response.End();
}

Try the below code:
//create new MemoryStream object and add PDF file’s content to outStream.
MemoryStream outStream = new MemoryStream();
//specify the duration of time before a page cached on a browser expires
Response.Expires = 0;
//specify the property to buffer the output page
Response.Buffer = true;
//erase any buffered HTML output
Response.ClearContent();
//add a new HTML header and value to the Response sent to the client
Response.AddHeader(“content-disposition”, “inline; filename=” + “output.doc”);
//specify the HTTP content type for Response as Pdf
Response.ContentType = “application/msword”;
//write specified information of current HTTP output to Byte array
Response.BinaryWrite(outStream.ToArray());
//close the output stream
outStream.Close();
//end the processing of the current page to ensure that no other HTML content is sent
Response.End();

Save the generated pdf directly to the server directory folder without user prompt

A friend of mine gave me this task so I can learn advance programming a little bit easier. I am currently doing convertion of an html page to pdf using itext sharp and email the pdf as an attachement. My idea is to save the pdf first to the server machine in the folder name ToBeEmailedPDF folder before using it as an email attachment. The thing that bothers me is that this dialog as what you can see in the picture shows up using the code that I have below.
StringBuilder sb = new StringBuilder();
StringWriter tw = new StringWriter(sb);
HtmlTextWriter hw = new HtmlTextWriter(tw);
pnlPDF.RenderControl(hw); // pnlPDF contains the html contents to be converted to pdf
string htmlDisplayText = sb.ToString();
Document document = new Document();
MemoryStream ms = new MemoryStream();
PdfWriter writer = PdfWriter.GetInstance(document, ms);
StringReader se = new StringReader(htmlDisplayText);
HTMLWorker obj = new HTMLWorker(document);
document.Open();
obj.Parse(se);
// step 5: we close the document
document.Close();
Response.Clear();
Response.AddHeader("content-disposition", "attachment; filename=report.pdf");
Response.ContentType = "application/pdf";
Response.Buffer = true;
Response.OutputStream.Write(ms.GetBuffer(), 0, ms.GetBuffer().Length);
Response.OutputStream.Flush();
Response.End();
I know many of you out there knows a better way or know how to solve my problem. Please help me. Thank you!

There is big difference between client-side and server-side.
Response class can output contents to client machine, if you need to save file on server use something like File.WriteAllBytes (msdn) method

What you are trying to achieve is impossible for security reasons. Only the user can decide where he wants the attachment to be saved. Imagine if this was possible: you would then be able to save any kind of viruses into any kind of folders on the user's computer. As an alternative to showing the Save dialog you could open the PDF inline:
Response.AddHeader("Content-Disposition", "inline; filename=report.pdf");

You can save it using the following code:
PdfWriter.GetInstance(pdfDoc, new FileStream(context.Server.MapPath("~") + "/PDF/" + reportName + ".pdf", FileMode.Create));