Work with Attachments in PDF via C#

How to Get, Add, Save, and Delete Attachments from PDF programmatically with C#

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How to Manage Attachments Using .NET Library

Add Attachments to PDF programmatically
Extract Attachments from PDF
Remove Attachments from PDF File

In order to add Attachments in PDF file, we’ll use Aspose.PDF for .NET API which is a feature-rich, powerful and easy to use document manipulation API for net platform. Open NuGet package manager, search for Aspose.PDF and install. You may also use the following command from the Package Manager Console.

Package Manager Console

PM > Install-Package Aspose.PDF

Work with Attachments in PDF via C#

You need Aspose.PDF for .NET to try the code in your environment.

  1. Create a new C# project.
  2. Add a reference to Aspose.PDF DLL.
  3. Create a Document object.
  4. Create a FileSpecification object with the file you are adding, and file description.
  5. Add the FileSpecification object to the Document object’s EmbeddedFiles collection, with the collection’s Add method
  6. Save the PDF file.

Adding Attachment to PDF document


Document pdfDocument = new Document(dataDir + "AddAttachment.pdf");

// Setup new file to be added as attachment
FileSpecification fileSpecification = 
    new FileSpecification(dataDir + "test.txt", 
    "Sample text file");

// Add attachment to document's attachment collection
pdfDocument.EmbeddedFiles.Add(fileSpecification);

dataDir = dataDir + "AddAttachment_out.pdf";

// Save new output
pdfDocument.Save(dataDir);