Create PDF in memory instead of physical file

Question

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[

Answer 1

Switch the filestream with a memorystream.

MemoryStream memStream = new MemoryStream();
PdfWriter wri = PdfWriter.GetInstance(doc, memStream);
...
return memStream.ToArray();