After filling PDF with iTextSharp, form is not savable/ usage rights removed
问题 I am currently working on a process that will use iTextSharp to partially fill a PDF form. This form is then emailed to a user and the user will finish completing the form. Then the form is submitted by email back to our email account and then processed. My problem is that once the PDF is sent out to a user, when the user opens the form and the data can not be saved. The original PDF that is used as a template can be filled out an saved. Somehow, during the process of using iTextSharp, the