This example demonstrates how to programmatically embed a JavaScript action into a PDF that automatically opens the print dialog upon document opening. This is useful for workflows where documents must be printed immediately without user interaction beyond opening the file. The key technique involves setting the OpenAction property of the PDF document to a JavaScript command using Aspose.PDF for .NET.

Steps to Add Auto-Print JavaScript Action to PDF using C#

1. Load the existing PDF document using the Document class
2. Create a new JavascriptAction with the script “this.print(true);” to open the print dialog
3. Assign the JavaScript action to the document’s OpenAction property
4. Save the modified PDF to a new file using the Save method
5. Verify the output file contains the auto-print behavior by opening it in a compatible PDF reader

The steps above configure the PDF to execute the print command automatically when opened. Note that modern PDF readers may prompt users to confirm printing due to security restrictions, but the action will still be triggered as intended.

Code to Add Auto-Print JavaScript Action to PDF using C#

This example illustrates how to enhance PDF automation workflows by embedding client-side JavaScript actions. The resulting PDF will prompt users to print as soon as the document is opened, streamlining print-dependent processes.