Create Table of Contents (TOC)

Updated on Apr 24, 2026

Product Version	Product	Author
2021.2.614	RadPdfProcessing	Martin Velikov

Description

This article describes how to import PDF documents, merge them, and create a Table of Contents pointing to the merged document pages.

Solution

The following code snippets shows how to: 1. Import two PDF documents into RadFixedDocument instances using the PdfFormatProvider; 2. Merge them into a single RadFixedDocument using the RadFixedDocument`s Merge() method; 3. Create a Table of Contents (TOC) using Link annotations pointing to the merged document pages; 4. Export the merged document to a single PDF file.

Example

csharp

	PdfFormatProvider provider = new PdfFormatProvider();

	RadFixedDocument document1, document2;
	ImportDocuments(provider, out document1, out document2);

	document1.Merge(document2);

	CreateTOC(document1);

	ExportToPdf(provider, document1);

Import PDF files

csharp

	private static void ImportDocuments(PdfFormatProvider provider, out RadFixedDocument document1, out RadFixedDocument document2)
	{
		using (Stream stream = File.OpenRead("SampleDocument1.pdf"))
		{
			document1 = provider.Import(stream);
		}

		using (Stream stream = File.OpenRead("SampleDocument2.pdf"))
		{
			document2 = provider.Import(stream);
		}
	}

Create the Table of Contents

csharp

	private static void CreateTOC(RadFixedDocument document1)
	{
		RadFixedPage toc = new RadFixedPage();
		document1.Pages.Insert(0, toc);

		FixedContentEditor editor = new FixedContentEditor(toc);

		foreach (RadFixedPage page in document1.Pages)
		{
			int pageNumber = document1.Pages.IndexOf(page);

			if (pageNumber > 0)
			{
				int factor = 20;

				int offsetX = 70;
				int offsetY = 20 + factor * pageNumber;
				editor.Position.Translate(offsetX, offsetY);

				Block block = new Block();
				block.GraphicProperties.FillColor = new RgbColor(255, 5, 99, 193);
				block.InsertText($"Page {pageNumber}");
				Size blockSize = block.Measure();
				editor.DrawBlock(block);

				Location location = new Location
				{
					Left = 0,
					Top = 0,
					Zoom = 0,
					Page = page
				};

				GoToAction goToAction = new GoToAction();
				goToAction.Destination = location;

				Link uriLink = toc.Annotations.AddLink(goToAction);
				uriLink.Rect = new Rect(offsetX, offsetY, blockSize.Width, blockSize.Height);
			}
		}
	}

Export to PDF file

csharp

	private static void ExportToPdf(PdfFormatProvider provider, RadFixedDocument document1)
	{
		string exportedPdf = "Exported.pdf";
		if (File.Exists(exportedPdf))
		{
			File.Delete(exportedPdf);
		}

		using (Stream output = File.OpenWrite(exportedPdf))
		{
			provider.Export(document1, output);
		}
	}