I’m working on a C# application and need to add a watermark to documents during the printing process. Specifically, I want to intercept the print job, add a watermark, and then proceed with printing.
Here’s the scenario: When a user presses Ctrl + P, the Print dialog appears. The user selects the printer and clicks Print. At this point, the print job is sent to the printer. Is there a way to pause or intercept this print job to add a watermark to the document before continuing with the print process?
Is it possible to achieve this in C#? If so, could you provide guidance or examples on how to implement this functionality?
Using PrintDocument Class: I attempted to use the PrintDocument class to handle printing and add a watermark, but this only works if I generate the document within the application, not if I’m printing an existing document.
Intercepting Print Jobs: I explored options for intercepting print jobs at the system level, but I wasn’t able to find a solution that integrates well with C# and allows modifying the print content.
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