使用GemBox.Document编辑PDF中的文件属性

Question

How can we modify all properties in PDF file?
I've seen the document properties example and ended up with this:

DocumentModel document = DocumentModel.Load("Input.docx");

document.DocumentProperties.BuiltIn[BuiltInDocumentProperty.Application] = "My Application";
document.DocumentProperties.BuiltIn[BuiltInDocumentProperty.Title] = "My Title";
document.DocumentProperties.BuiltIn[BuiltInDocumentProperty.Author] = "My Author";
// Etc ...

document.Save("Output.pdf");

But some properties are missing, for instance there is no Producer and Creator enums in BuiltInDocumentProperty . Am I missing something?

Answer 1

The BuiltInDocumentProperty enums are based on Word documents, but nevertheless try the following example:

// The "BuiltInDocumentProperty.Application" is the PDF's "Creator" property.
// If you're experiencing an issue with it, try downloading the latest bug fix version:
// https://www.gemboxsoftware.com/document/downloads/BugFixes.htm
document.DocumentProperties.BuiltIn[BuiltInDocumentProperty.Application] = "My Application";

// The PDF's "Producer" property is missing, but you can use the following:
document.DocumentProperties.Custom.Add("Producer", "My Producer");

document.DocumentProperties.BuiltIn[BuiltInDocumentProperty.Title] = "My Title";
document.DocumentProperties.BuiltIn[BuiltInDocumentProperty.Author] = "My Author";
document.DocumentProperties.BuiltIn[BuiltInDocumentProperty.Subject] = "My Subject";
document.DocumentProperties.BuiltIn[BuiltInDocumentProperty.Keywords] = "My Keywords";
document.DocumentProperties.BuiltIn[BuiltInDocumentProperty.DateContentCreated] =
    new DateTime(2000, 1, 1).ToString("s") + "Z";
document.DocumentProperties.BuiltIn[BuiltInDocumentProperty.DateLastSaved] =
    new DateTime(2000, 1, 1).ToString("s") + "Z";

I hope this helps.