The PDF SDK for .NET  product has been acquired by Sybrex company in January, 2011 and not available on our web-site anymore.

NEW: Check our new rich PDF reports generator for Javascript (completely client side generation): PDF Generator SDK for Javascriptclick here to read more details...

For 3rd party server side C# open-source PDF generation library?

Check the blog article: .NET Bear, Do You Know Any Free PDF Generation Libraries For Use In Commercial Applications?

Our commercial products for PDF format:

PDF Extractor SDK - extract tables, text, structured data from PDF files in your apps

PDF Renderer SDK - render PDF files to PNG, BMP, TIFF images in your apps

PDF To HTML SDK - convert PDF to HTML with images and formatting preserved

Add file attachment (embedded attachment) to PDF document generated with Bytescout.PDF library for .NET

How to embedded add file attachment into PDF document using Bytescout.PDF library for .NET

This example uses Bytescout.PDF library to add file attachment (embedded file attachment) from file to the generated PDF document (using Visual C#)

Download example source code: (4 KB)

screenshot of PDF document with file attachment embedded into PDF document using Bytescout.PDF library

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using Bytescout.PDF;

namespace DemoProject
class Program
static void Main(string[] args)
// Create main PDF Doc Engine
PDFDocEngine engine = new PDFDocEngine("demo", "demo");
// Add new document
Document document = engine.AddDocument();
// Append new page to the document
Page page = document.AddPage(PageSizeType.A3, PageOrientationType.LandScape);
document.AddAttachedFile("HelloWorld.pdf", "HelloWorld.pdf", "HelloWorld", false);
// Save document

Download example source code: (4 KB)

Filed in: PDF SDK for .NET