NuGet Package: DevExpress.Document.Processor
Add the DevExpress.Docs reference to your application to access extension methods for the WinForms PDF Viewer and WPF PDF Viewer.
The PdfViewerExtensions class provides the following features:
Export/Import Interactive Form Data from Code
Call one of the PdfViewerExtensions.Export extension methods with the specified data format settings to export interactive form data from a document to one of the supported formats. Refer to the How to: Export AcroForm Data to XML example for more information.
Call one of the PdfViewerExtensions.Import extension methods with or without data format settings to import interactive form data. Refer to the How to: Import Interactive Form Data from XML example for more information.
Protect a Document with a Password and Specify a Signature
Call one of the PdfViewerExtensions.SaveDocument extension methods and pass the PdfSaveOptions object containing the encryption settings as a parameter to protect a document with an owner or user password. See the Document Protection topic to learn more.
Call one of the PdfViewerExtensions.SaveDocument extension methods and pass the PdfSaveOptions object containing the document signature as a parameter to specify the document signature. Refer to the Sign Documents topic for more information.