This code will show you how to use PdfStamper to work with MemoryStreams in C#.NET.
You should download and install itextsharp to your project, then you can try the code pattern following.
using (MemoryStream ms = new MemoryStream()) {
using (PdfStamper stamper = new PdfStamper(reader, ms, '\0', true)) {
//process your data
}
return ms.ToArray();
}
When working with MemoryStream and PdfStamper, write your general pattern as above code.