PdfReader from MemoryStream()

Can anyone give me an example of how to get a PdfReader from a MemoryStream? I can see that the PdfReader class has a couple of methods which look likely candidates(GetStreamBytes & GetStreamBytesRaw), however these seem to want iText specific streams, mine is just a regular Byte[] or MemoryStream.

This is using C# and .net4

iTextSharp.text.pdf.PdfReader rdr = iTextSharp.text.pdf.PdfReader.GetStreamBytesRaw

Thanks in advance.

You can create a PdfReader from a MemoryStream, so long as the MemoryStream is a valid PDF object. extract text from pdf using c#, http://www.iditect.com/tutorial/pdf-to-text/, support extracting text in paragraph, pdf table, header and footer, no matter text in any font and style . If the MemoryStream is a valid PDF object, then one way to initiate the PdfReader is this way:

PdfReader _reader = new PdfReader((byte[])_memoryStream.ToArray());

In the code below, the PdfReader is initialized from .Net Resource which is returned as a byte[] when called from the Properties.Resources object, so the Resource and the MemoryStream are returning the same type to the PdfReader, a byte[]. I then create a PdfStamper object from the PdfReader object, and use a MemoryStream as the resulting container for the PdfStamper.

PdfReader _srcDoc = new PdfReader(Properties.Resources.Resource1);
MemoryStream _output = new MemoryStream();
PdfStamper _scratchDoc = new PdfStamper(_srcDoc, _output);

Maybe a bit late. Try to set the streams position to 0.

If you want to just open the pdf in browser using bytes then do this :

public void ReturnPDF(byte[] contents, string attachmentFilename)
var response = HttpContext.Current.Response;
if (!string.IsNullOrEmpty(attachmentFilename))
response.ContentType = “application/pdf”;
response.AddHeader(“Content-Disposition”, “attachment; filename=” + attachmentFilename);

response.ContentType = “application/pdf”;
catch (Exception ex)
throw ex;


I have a pdf in a memorystream and I need to read it with a PdfReader. PdfReader rdr = new PdfReader(pdfstream); throws a “PDF header signature not found” error.

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