> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/xamarin/get-started/samples/pdfpackagetest.md).
# PDFPackage
Sample C# code to use Apryse SDK for creating, extracting, and manipulating PDF packages (also known as PDF portfolios).
Sample C# code to use Apryse SDK for creating, extracting, and manipulating PDF packages (also known as PDF portfolios).
Learn more about our full [PDF Data Extraction SDK Capabilities](https://apryse.com/capabilities/extraction).
To start your free trial, [get stated with Xamarin SDK](/xamarin/get-started/get-started.md).
{% tabs %}
{% tab title="C#" %}
{% code lineNumbers="true" %}
```csharp
//
// Copyright (c) 2001-2021 by PDFTron Systems Inc. All Rights Reserved.
//
using System;
using pdftron;
using pdftron.Common;
using pdftron.Filters;
using pdftron.SDF;
using pdftron.PDF;
using NUnit.Framework;
namespace MiscellaneousSamples
{
///
/// This sample illustrates how to create, extract, and manipulate PDF Portfolios
/// (a.k.a. PDF Packages) using PDFNet SDK.
///
[TestFixture]
public class PDFPackageTest
{
// Relative path to the folder containing test files.
const string input_path = "TestFiles/";
///
/// The main entry point for the application.
///
[Test]
public static void Sample()
{
// Create a PDF Package.
try
{
using (PDFDoc doc = new PDFDoc())
{
AddPackage(doc, Utils.GetAssetTempFile(input_path + "numbered.pdf"), "My File 1");
AddPackage(doc, Utils.GetAssetTempFile(input_path + "newsletter.pdf"), "My Newsletter...");
AddPackage(doc, Utils.GetAssetTempFile(input_path + "peppers.jpg"), "An image");
AddCovePage(doc);
doc.Save(Utils.CreateExternalFile("package.pdf"), SDFDoc.SaveOptions.e_linearized);
Console.WriteLine("Done.");
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
Assert.True(false);
}
// Extract parts from a PDF Package.
try
{
using (PDFDoc doc = new PDFDoc(Utils.CreateExternalFile("package.pdf")))
{
doc.InitSecurityHandler();
pdftron.SDF.NameTree files = NameTree.Find(doc, "EmbeddedFiles");
if(files.IsValid())
{
// Traverse the list of embedded files.
NameTreeIterator i = files.GetIterator();
for (int counter = 0; i.HasNext(); i.Next(), ++counter)
{
string entry_name = i.Key().GetAsPDFText();
Console.WriteLine("Part: {0}", entry_name);
FileSpec file_spec = new FileSpec(i.Value());
Filter stm = file_spec.GetFileData();
if (stm!=null)
{
string fname = "extract_" + counter.ToString() + System.IO.Path.GetExtension(entry_name);
stm.WriteToFile(Utils.CreateExternalFile(fname), false);
}
}
}
}
Console.WriteLine("Done.");
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
Assert.True(false);
}
}
static void AddPackage(PDFDoc doc, string file, string desc)
{
NameTree files = NameTree.Create(doc, "EmbeddedFiles");
FileSpec fs = FileSpec.Create(doc, file, true);
byte[] file1_name = System.Text.Encoding.UTF8.GetBytes(file);
files.Put(file1_name, fs.GetSDFObj());
fs.GetSDFObj().PutText("Desc", desc);
Obj collection = doc.GetRoot().FindObj("Collection");
if (collection == null) collection = doc.GetRoot().PutDict("Collection");
// You could here manipulate any entry in the Collection dictionary.
// For example, the following line sets the tile mode for initial view mode
// Please refer to section '2.3.5 Collections' in PDF Reference for details.
collection.PutName("View", "T");
}
static void AddCovePage(PDFDoc doc)
{
// Here we dynamically generate cover page (please see ElementBuilder
// sample for more extensive coverage of PDF creation API).
Page page = doc.PageCreate(new Rect(0, 0, 200, 200));
using (ElementBuilder b = new ElementBuilder())
using (ElementWriter w = new ElementWriter())
{
w.Begin(page);
Font font = Font.Create(doc, Font.StandardType1Font.e_helvetica);
w.WriteElement(b.CreateTextBegin(font, 12));
Element e = b.CreateTextRun("My PDF Collection");
e.SetTextMatrix(1, 0, 0, 1, 50, 96);
e.GetGState().SetFillColorSpace(ColorSpace.CreateDeviceRGB());
e.GetGState().SetFillColor(new ColorPt(1, 0, 0));
w.WriteElement(e);
w.WriteElement(b.CreateTextEnd());
w.End();
doc.PagePushBack(page);
}
// Alternatively we could import a PDF page from a template PDF document
// (for an example please see PDFPage sample project).
// ...
}
}
}
```
{% endcode %}
{% endtab %}
{% endtabs %}
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.
Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:
```
GET https://docs.apryse.com/xamarin/get-started/samples/pdfpackagetest.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.