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View this topic on docs.devexpress.com (Learn more)

Merging Documents

The PDF Document API component allows you to merge multiple PDF documents.

Before merging, create a document with no pages.

To create this document, create a PdfDocumentProcessor object instance and call the overloaded PdfDocumentProcessor.CreateEmptyDocument method (for example, via a file path).

This method saves the merge result on a local disk to decrease memory consumption when merging documents. This means the document's content is not kept in memory during the merging.


The PDF Document API component retains the original document's content while merging documents.

To add a required document to the resulting document, call an overloaded PdfDocumentProcessor.AppendDocument method.

When the merge is completed, close the resulting document by disposing of the PdfDocumentProcessor instance.

Note that you do not need to save this document since it is written during the merging.


This example illustrates how to use the PDF Document API component for merging pages of two separate PDF documents into a single PDF document.

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