C# - Read DocumentPrivilege properties from a PDF file

Question

I am using Aspose library to read, open and save pdf file. I am looking the way to get the security value of a pdf file from the property "AllowModifyContents".

This is how it is set:

            using (var documenttosecure = new Aspose.Pdf.Document(inputFilePath))
            {
                using (var pdfOutput = new PdfFileSecurity(documenttosecure))
                {
                    var docP = DocumentPrivilege.AllowAll;

                    docP.AllowPrint = true;
                    docP.AllowCopy = true;
                    docP.AllowModifyContents = false;

                    pdfOutput.SetPrivilege(docP);

                    documenttosecure.Save(outputFile);
                }
            }

Now I need to get that pdf and find the property AllowModifyContents from the pdf DocumentPrivilege.

Do you know how to read that property value?

Thanks for your help; Sergio

Answer 1

GetDocumentPrivilege() method of Aspose.Pdf.Facades.PdfFileInfo class, returns an object of type DocumentPrivilege, through which you can determine the value of AllowModifyContents property. Please check following code snippet, in order to achieve your requirement.

// Instantiate PdfFileInfo Class object.
Aspose.Pdf.Facades.PdfFileInfo info = new Aspose.Pdf.Facades.PdfFileInfo();
// Load your encrypted PDF document.
info.BindPdf(dataDir + "EncryptedDocument.pdf");
// Get DocumentPrivilege
Facades.DocumentPrivilege documentPrivilege = info.GetDocumentPrivilege();
// Determine AllowModifyContents
bool AllowModifyContents = documentPrivilege.AllowModifyContents;

Note: I am Asad Ali and work as Developer Evangelist at Aspose.