How do one create PDF in memorystream instead of physical file using itextsharp.
The code below is creating actual pdf file.
Instead how can I create a byte[] and store it in the byte[] so that I can return it through a function
using iTextSharp.text;
using iTextSharp.text.pdf;
Document doc = new Document(iTextSharp.text.PageSize.LETTER, 10, 10, 42, 35);
PdfWriter wri = PdfWriter.GetInstance(doc, new FileStream("c:\\Test11.pdf", FileMode.Create));
doc.Open();//Open Document to write
Paragraph paragraph = new Paragraph("This is my first line using Paragraph.");
Phrase pharse = new Phrase("This is my second line using Pharse.");
Chunk chunk = new Chunk(" This is my third line using Chunk.");
doc.Add(paragraph);
doc.Add(pharse);
doc.Add(chunk);
doc.Close(); //Close document
Switch the filestream with a memorystream.
MemoryStream memStream = new MemoryStream();
PdfWriter wri = PdfWriter.GetInstance(doc, memStream);
...
return memStream.ToArray();
using iTextSharp.text;
using iTextSharp.text.pdf;
Document doc = new Document(iTextSharp.text.PageSize.LETTER, 10, 10, 42, 35);
byte[] pdfBytes;
using(var mem = new MemoryStream())
{
using(PdfWriter wri = PdfWriter.GetInstance(doc, mem))
{
doc.Open();//Open Document to write
Paragraph paragraph = new Paragraph("This is my first line using Paragraph.");
Phrase pharse = new Phrase("This is my second line using Pharse.");
Chunk chunk = new Chunk(" This is my third line using Chunk.");
doc.Add(paragraph);
doc.Add(pharse);
doc.Add(chunk);
}
pdfBytes = mem.ToArray();
}
I've never used iTextPDF before but it sounded interesting so I took upon the challenge and did some research on my own. Here's how to stream the PDF document via memory.
protected void Page_Load(object sender, EventArgs e)
{
ShowPdf(CreatePDF2());
}
private byte[] CreatePDF2()
{
Document doc = new Document(PageSize.LETTER, 50, 50, 50, 50);
using (MemoryStream output = new MemoryStream())
{
PdfWriter wri = PdfWriter.GetInstance(doc, output);
doc.Open();
Paragraph header = new Paragraph("My Document") {Alignment = Element.ALIGN_CENTER};
Paragraph paragraph = new Paragraph("Testing the iText pdf.");
Phrase phrase = new Phrase("This is a phrase but testing some formatting also. \nNew line here.");
Chunk chunk = new Chunk("This is a chunk.");
doc.Add(header);
doc.Add(paragraph);
doc.Add(phrase);
doc.Add(chunk);
doc.Close();
return output.ToArray();
}
}
private void ShowPdf(byte[] strS)
{
Response.ClearContent();
Response.ClearHeaders();
Response.ContentType = "application/pdf";
Response.AddHeader("Content-Disposition", "attachment; filename=" + DateTime.Now);
Response.BinaryWrite(strS);
Response.End();
Response.Flush();
Response.Clear();
}
Where your code has new FileStream, pass in a MemoryStream you've already created. (Don't just create it inline in the call to PdfWriter.GetInstance - you'll want to be able to refer to it later.)
Then call ToArray() on the MemoryStream when you've finished writing to it to get a byte[]:
using (MemoryStream output = new MemoryStream())
{
PdfWriter wri = PdfWriter.GetInstance(doc, output);
// Write to document
// ...
return output.ToArray();
}
I haven't used iTextSharp, but I suspect some of these types implement IDisposable - in which case you should be creating them in using statements too.
Related
Keep getting an error 'Cannot access a closed Stream.'
Does the file need to be physically saved on a server first, prior to being Streamed? I am doing the same with Excel file and it works just fine. Trying to use the same principle here with PDF file.
[HttpGet("ExportPdf/{StockId}")]
public IActionResult ExportPdf(int StockId)
{
string fileName = "test.pdf";
MemoryStream memoryStream = new MemoryStream();
// Create PDF document
Document document = new Document(PageSize.A4, 25, 25, 25, 25);
PdfWriter pdfWriter = PdfWriter.GetInstance(document, memoryStream);
document.Open();
document.Add(new Paragraph("Hello World"));
document.Close();
memoryStream.Position = 0;
return File(memoryStream, "application/pdf", fileName);
}
Are you using iText7? If yes, please add that tag onto your question.
using (var output = new MemoryStream())
{
using (var pdfWriter = new PdfWriter(output))
{
// You need to set this to false to prevent the stream
// from being closed.
pdfWriter.SetCloseStream(false);
using (var pdfDocument = new PdfDocument(pdfWriter))
{
...
}
var renderedBuffer = new byte[output.Position];
output.Position = 0;
output.Read(renderedBuffer, 0, renderedBuffer.Length);
...
}
}
Switched to iText& (7.1.1) version as per David Liang comment
Here is the code that worked for me, a complete method:
[HttpGet]
public IActionResult Pdf()
{
MemoryStream memoryStream = new MemoryStream();
PdfWriter pdfWriter = new PdfWriter(memoryStream);
PdfDocument pdfDocument = new PdfDocument(pdfWriter);
Document document = new Document(pdfDocument);
document.Add(new Paragraph("Welcome"));
document.Close();
byte[] file = memoryStream.ToArray();
MemoryStream ms = new MemoryStream();
ms.Write(file, 0, file.Length);
ms.Position = 0;
return File(fileStream: ms, contentType: "application/pdf", fileDownloadName: "test_file_name" + ".pdf");
}
I have a System.Net.Mail.MailMessage which shall have it's html body and pdf attachments converted into one single pdf.
Converting the html body to pdf works for me with this answer
Converting the pdf attachments into one pdf works for me with this answer
However after ~10 hours of trying I can not come up with a combined solution which does both. All I'm getting are NullReferenceExceptions somewhere in IText source, "the document is not open", etc...
For example, this will throw no error but the resulting pdf will only contain the attachments but not the html email body:
Document document = new Document();
StringReader sr = new StringReader(mail.Body);
HTMLWorker htmlparser = new HTMLWorker(document);
using (FileStream fs = new FileStream(targetPath, FileMode.Create))
{
PdfCopy writer = new PdfCopy(document, fs);
document.Open();
htmlparser.Parse(sr);
foreach (string fileName in pdfList)
{
PdfReader reader = new PdfReader(fileName);
reader.ConsolidateNamedDestinations();
for (int i = 1; i <= reader.NumberOfPages; i++)
{
PdfImportedPage page = writer.GetImportedPage(reader, i);
writer.AddPage(page);
}
PRAcroForm form = reader.AcroForm;
if (form != null)
{
writer.CopyAcroForm(reader);
}
reader.Close();
}
writer.Close();
document.Close();
}
I'm using the LGPL licensed ITextSharp 4.1.6
From v4.1.6 fanboy to v4.1.6 fanboy :D
Looks like the HTMLWorker is closing the documents stream right after parsing. So as a workaround, you could create a pdf from your mailbody in memory. And then add this one together with the attachment to your final pdf.
Here is some code, that should do the trick:
StringReader htmlStringReader = new StringReader("<html><body>Hello World!!!!!!</body></html>");
byte[] htmlResult;
using (MemoryStream htmlStream = new MemoryStream())
{
Document htmlDoc = new Document();
PdfWriter htmlWriter = PdfWriter.GetInstance(htmlDoc, htmlStream);
htmlDoc.Open();
HTMLWorker htmlWorker = new HTMLWorker(htmlDoc);
htmlWorker.Parse(htmlStringReader);
htmlDoc.Close();
htmlResult = htmlStream.ToArray();
}
byte[] pdfResult;
using (MemoryStream pdfStream = new MemoryStream())
{
Document doc = new Document();
PdfCopy copyWriter = new PdfCopy(doc, pdfStream);
doc.Open();
PdfReader htmlPdfReader = new PdfReader(htmlResult);
AppendPdf(copyWriter, htmlPdfReader); // your foreach pdf code here
htmlPdfReader.Close();
PdfReader attachmentReader = new PdfReader("C:\\temp\\test.pdf");
AppendPdf(copyWriter, attachmentReader);
attachmentReader.Close();
doc.Close();
pdfResult = pdfStream.ToArray();
}
using (FileStream fs = new FileStream("C:\\temp\\test2.pdf", FileMode.Create, FileAccess.Write))
{
fs.Write(pdfResult, 0, pdfResult.Length);
}
private void AppendPdf(PdfCopy writer, PdfReader reader)
{
for (int i = 1; i <= reader.NumberOfPages; i++)
{
PdfImportedPage page = writer.GetImportedPage(reader, i);
writer.AddPage(page);
}
}
Ofc you could directly use a FileStream for the final document instead of a MemoryStream as well.
here is What i want i want to add page numbers to every pdf page that i generated on the fly.
i used on end page method but it did not worked out even when i added the doc bottom margin.
I decided to add the page numbers after the pdf is generated from the file path.
here is my code for generating pdf:
Document doc = new Document(iTextSharp.text.PageSize.LETTER, 10, 10, 42, 35);
PdfWriter wri = PdfWriter.GetInstance(doc, new FileStream("t5.pdf", FileMode.Create));
doc.Open();//Open Document to write
iTextSharp.text.Font font8 = FontFactory.GetFont("ARIAL", 7);
Paragraph paragraph = new Paragraph("Some content");
doc.Add(paragraph);
doc.Add(paragraph);// add paragraph to the document
doc.Close();
FileStream stream = File.OpenRead("t5.pdf");
byte[] fileBytes = new byte[stream.Length];
stream.Read(fileBytes, 0, fileBytes.Length);
stream.Close();
AddPageNumbers(fileBytes);
using (Stream file = File.OpenWrite("t5.pdf"))
{
file.Write(fileBytes, 0, fileBytes.Length);
}
}
and her is my add pagenumbers method:
MemoryStream ms = new MemoryStream();
PdfReader reader = new PdfReader(pdf);
int n = reader.NumberOfPages;
iTextSharp.text.Rectangle psize = reader.GetPageSize(1);
Document document = new Document(psize, 50, 50, 50, 50);
PdfWriter writer = PdfWriter.GetInstance(document, ms);
document.Open();
PdfContentByte cb = writer.DirectContent;
int p = 0;
for (int page = 1; page <= reader.NumberOfPages; page++)
{
document.NewPage();
p++;
PdfImportedPage importedPage = writer.GetImportedPage(reader, page);
cb.AddTemplate(importedPage, 0, 0);
BaseFont bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
cb.BeginText();
cb.SetFontAndSize(bf, 10);
cb.ShowTextAligned(PdfContentByte.ALIGN_CENTER, +p + "/" + n, 100, 450, 0);
cb.EndText();
}
document.Close();
return ms.ToArray();
how ever it does not add the page numbers to the pdf document so what is the alternatives here? what can i do.
When posting a question here, please only post the smallest amount of code possible. Your "create a sample PDF with multiple pages" is 116 lines long. Inside of it you've got complicated PdfPTable and DataTable logic that is 100% unrelated to the problem. Instead, the following 13 lines is enough to make a multiple page PDF:
//Create a sample multiple page PDF and place it on the desktop
var outputFile = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "t5.pdf");
using (var fs = new FileStream(outputFile, FileMode.Create, FileAccess.Write, FileShare.None)) {
using (var doc = new Document()) {
using (var writer = PdfWriter.GetInstance(doc, fs)) {
doc.Open();
for (var i = 0; i < 1000; i++) {
doc.Add(new Paragraph(String.Format("This is paragraph #{0}", i)));
}
doc.Close();
}
}
}
Second, get rid of try/catch. Those are great for production (sometimes) but at the development level that's why we have IDEs and compilers, they'll tell us specifically what's wrong.
Now on to the bigger problem, you need to keep these two processes separate from each other. Every single brace and object from part part #1 must be closed, done and accounted for. Part #2 then needs to be fed a completely valid PDF but neither of the two parts should be "aware" of each other or depend on each other.
Since you just borrowed some code that wasn't intended for what you're trying to do I'm going to also ignore that and use some code that I know specifically will work. Also, since you're open to using a MemoryStream in the first place I'm just going to avoid writing to disk until I need to. Below is a full working sample that creates a multiple page and then adds page numbers in a second pass.
//Will hold our PDF as a byte array
Byte[] bytes;
//Create a sample multiple page PDF, nothing special here
using (var ms = new MemoryStream()) {
using (var doc = new Document()) {
using (var writer = PdfWriter.GetInstance(doc, ms)) {
doc.Open();
for (var i = 0; i < 1000; i++) {
doc.Add(new Paragraph(String.Format("This is paragraph #{0}", i)));
}
doc.Close();
}
}
//Store our bytes before
bytes = ms.ToArray();
}
//Read our sample PDF and apply page numbers
using (var reader = new PdfReader(bytes)) {
using (var ms = new MemoryStream()) {
using (var stamper = new PdfStamper(reader, ms)) {
int PageCount = reader.NumberOfPages;
for (int i = 1; i <= PageCount; i++) {
ColumnText.ShowTextAligned(stamper.GetOverContent(i), Element.ALIGN_CENTER, new Phrase(String.Format("Page {0} of {1}", i, PageCount)), 100, 10 , 0);
}
}
bytes = ms.ToArray();
}
}
var outputFile = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "t5.pdf");
System.IO.File.WriteAllBytes(outputFile, bytes);
I already generate a pdf using itextsharp..and save it in our local server. I want to download this pdf in another button click. Code for generate pdf is working properly.Downloading occured but some error ocuured trying to open it."Because it is either not a supportive file type,or file has been damaged
protected void createpdf_Click(object sender, EventArgs e)
{
fs = new FileStream(Server.MapPath("pdf") + "\\" + "First PDF document.pdf", FileMode.Create);
document = new Document(PageSize.A4, 25, 25, 30, 30);
writer = PdfWriter.GetInstance(document, fs);
document.Open();
document.Add(new Paragraph("Pdf Geneartion!"));
document.Close();
writer.Close();
fs.Close();
}
Code for download pdf
protected void download_Click(object sender, EventArgs e)
{
try
{
fs = new FileStream(Server.MapPath("pdf") + "\\" + "FirstPDFdocument1.pdf", FileMode.Create);
document = new Document(PageSize.A4, 25, 25, 30, 30);
writer = PdfWriter.GetInstance(document, fs);
using (MemoryStream ms = new MemoryStream())
{
document.Open();
Response.Clear();
Response.ContentType = "pdf/application";
Response.AddHeader("content-disposition", "attachment;filename=PDFdocument1.pdf");
Response.OutputStream.Write(ms.GetBuffer(), 0, ms.GetBuffer().Length);
}
writer.Close();
fs.Close();
}
catch (Exception ex)
{
Response.Write(ex.ToString());
}
}
Everything looks more or less correct except the ContentType. It should be application/pdf instead of pdf/application. Also, as #lc points out, the MemoryStream does not look like it is being written to. Try something like this instead:
using (MemoryStream ms = new MemoryStream())
{
PdfWriter.GetInstance(document, ms); // added
document.Open();
Response.Clear();
Response.ContentType = "application/pdf"; // changed
Response.AddHeader("content-disposition", "attachment;filename=PDFdocument1.pdf");
Response.OutputStream.Write(ms.GetBuffer(), 0, ms.GetBuffer().Length);
}
Can anyone tell me how to convert a PdfReader object into a PdfDocument ?
I have read a disk file and converted to a memorystream but I need it as a PdfDocument for other methods in my C# program.
I'm converting an application to use iTextSharp instead of PdfSharp.
MemoryStream pdfstream = new MemoryStream();
/* Convert the attachment to an byte array */
byte[] pdfarray = (byte[])dr["Data"];
/* Write the attachment into the memory */
pdfstream.Write(pdfarray, 0, pdfarray.Length);
/* Set the memorystream to the beginning */
pdfstream.Seek(0, System.IO.SeekOrigin.Begin);
/* Open the pdf document */
PdfSharp.Pdf.PdfDocument document = PdfSharp.Pdf.IO.PdfReader.Open(pdfstream, PdfDocumentOpenMode.Modify);
//iTextSharp.text.Document doc1 = iTextSharp.text.pdf.PdfReader.GetStreamBytes(
//ITS.pdf.PdfReader rdr = ITS.pdf.PdfReader(
string filename = DateTime.Now.Ticks.ToString() + "_" + dr["AttachmentName"].ToString();
string path = Path.Combine(FolderName, filename);
document.Save(path);
I think you can do something like this (note code not run or tested, might need a tweak):
using (MemoryStream ms = new MemoryStream())
{
Document doc = new Document(PageSize.A4, 50, 50, 15, 15);
PdfWriter writer = PdfWriter.GetInstance(doc, ms);
using (var rdr = new PdfReader(filePath))
{
PdfImportedPage page;
for(int i = 1; i <= rdr.PageCount; i++)
{
page = writer.GetImportedPage(templateReader, i)
writer.DirectContent.AddTemplate(page, 0, 0);
doc.NewPage();
}
}
}
This will read in the PDF page by page and output it to your document.