PdfEncryptionOptions.ModificationPermissions Property
Specifies the permissions on document modification operations.
Namespace: DevExpress.Pdf
Assembly: DevExpress.Pdf.v23.2.Core.dll
NuGet Package: DevExpress.Pdf.Core
Declaration
Property Value
| Type | Description |
|---|---|
| PdfDocumentModificationPermissions | A PdfDocumentModificationPermissions enumeration value. |
Available values:
| Name | Description |
|---|---|
| NotAllowed | Prohibit document modification and assembling. |
| DocumentAssembling | Allow only document assembling such as inserting, rotating or deleting pages, as well as bookmark creation on the navigation pane. |
| Allowed | Permit document modification and assembling. |
Property Paths
You can access this nested property as listed below:
| Object Type | Path to ModificationPermissions |
|---|---|
| PdfSaveOptions |
|
Remarks
This property can be set to the one of the following values: PdfDocumentModificationPermissions.Allowed, PdfDocumentModificationPermissions.DocumentAssembling and PdfDocumentModificationPermissions.NotAllowed.
To restrict document modification operations with a PDF document, create a PdfEncryptionOptions object using the PdfSaveOptions.EncryptionOptions property and specify the owner password using the PdfEncryptionOptions.OwnerPasswordString property, and modification permissions using the ModificationPermissions property.
The owner password allows a user to have full access to a document.
Note
The restrictions on data extraction, data modification, interactive, or printing operations with a PDF document can’t be applied without the owner password.
For more information, see the Document Protection topic.
Example
This example shows how a PDF document can be protected using both the owner and user passwords.
Refer to the following topic fro more information: Document Protection
using DevExpress.Pdf;
namespace PDFPasswordProtection
{
class Program
{
static void Main(string[] args)
{
using (PdfDocumentProcessor pdfDocumentProcessor = new PdfDocumentProcessor()) {
// Load a PDF document.
pdfDocumentProcessor.LoadDocument("..\\..\\Demo.pdf");
// Specify printing, data extraction, modification, and interactivity permissions.
PdfEncryptionOptions encryptionOptions = new PdfEncryptionOptions();
encryptionOptions.PrintingPermissions = PdfDocumentPrintingPermissions.Allowed;
encryptionOptions.DataExtractionPermissions = PdfDocumentDataExtractionPermissions.NotAllowed;
encryptionOptions.ModificationPermissions = PdfDocumentModificationPermissions.DocumentAssembling;
encryptionOptions.InteractivityPermissions = PdfDocumentInteractivityPermissions.Allowed;
// Specify the owner and user passwords for the document.
encryptionOptions.OwnerPasswordString = "OwnerPassword";
encryptionOptions.UserPasswordString = "UserPassword";
// Specify the 256-bit AES encryption algorithm.
encryptionOptions.Algorithm = PdfEncryptionAlgorithm.AES256;
// Save the protected document with encryption settings.
pdfDocumentProcessor.SaveDocument("..\\..\\ProtectedDocument.pdf", new PdfSaveOptions() { EncryptionOptions = encryptionOptions });
}
}
}
}
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the ModificationPermissions property.
Note
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