Adding Page Labels When Importing Pages Between PDFs

The Syncfusion Essential^® PDF offers a powerful and high-performance .NET PDF library for creating, reading, and editing PDF documents without Adobe dependencies. This tutorial demonstrates how to add page labels while importing pages from one PDF to another using C#.

Steps to add page labels while importing pages from one PDF to another programmatically:

1. Create a Console Application: Set up a new console application project.
   
   
2. Install Syncfusion^® Package: Add the Syncfusion.Pdf.Net.Core NuGet package to your console application.

C#

using Syncfusion.Pdf.Graphics;
using Syncfusion.Pdf.Parsing;
using Syncfusion.Pdf;
using Syncfusion.Drawing;

4. Implementation: Use the following C# code to import pages and add page labels.
   C#

// Open the first PDF document (Barcode.pdf).
using (FileStream inputFileStream = new FileStream(@"Barcode.pdf", FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
   // Load and process the PDF document.
   PdfLoadedDocument loadedDocument = new PdfLoadedDocument(inputFileStream);
   PdfDocument document = new PdfDocument();

   // Add pages from the first document
   AddPagesWithLabels(loadedDocument, document, PdfNumberStyle.UpperRoman);

   // Open the second PDF document (Invoice.pdf).
   loadedDocument = new PdfLoadedDocument(new FileStream(@"Invoice.pdf", FileMode.Open));
   
   // Add pages from the second document
   AddPagesWithLabels(loadedDocument, document, PdfNumberStyle.Numeric);

   // Save the final PDF document.
   using (MemoryStream stream = new MemoryStream())
   {
       document.Save(stream);
       File.WriteAllBytes(@"Output.pdf", stream.ToArray());
   }
   document.Close(true);
}

// Helper function to add pages with labels
static void AddPagesWithLabels(PdfLoadedDocument loadedDocument, PdfDocument document, PdfNumberStyle numberStyle)
{
   PdfSection section = document.Sections.Add();
   section.PageLabel = new PdfPageLabel();
   section.PageLabel.StartNumber = 1;
   section.PageLabel.NumberStyle = numberStyle;
   section.PageSettings.Margins.All = 0;

   for (int i = 0; i < loadedDocument.Pages.Count; i++)
   {
       PdfPage page = section.Pages.Add();
       PdfTemplate template = loadedDocument.Pages[i].CreateTemplate();
       page.Graphics.DrawPdfTemplate(template, PointF.Empty, template.Size);
   }
   loadedDocument.Close(true);
}

A complete working sample can be downloaded: page_labels_while_importing_pages_from_one_PDF_to_another.zip

By executing the program, the output PDF document will be generated as shown below:

Take a moment to explore the documentation for working with pages, where you’ll find additional options such as inserting, removing, and rearranging pages in a PDF document, adding margins, and importing pages from an existing PDF.

Conclusion
I hope you enjoyed learning about how to add page labels while importing pages from one PDF to another.

You can refer to our ASP.NET Core PDF feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our ASP.NET Core PDF example to understand how to create and manipulate data.

For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion;, you can try our 30-day free trial to check out our other controls.

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