Migradoc Embedded Files

[mitsakosgr]

Hello,
I am trying to embed a file in a migradoc document.

I call the AddEmbeddedFile() to attach the file and then then AddHyperlinkToEmbeddedDocument() to add the hyperlink to it and add an image and text to it.

The problem is that while the image and the text is there the hyperlink is not opening anything. It doesn't even look like a hyperlink (changing cursor and adding background, at least in firefox).

The code I use is the following:

_section.Document!.AddEmbeddedFile(file.FileId, tempFile);

var hyperlink = paragraph.AddHyperlinkToEmbeddedDocument(file.FileId);

var image = hyperlink.AddImage(PdfLogo);
image.Width = 32;
hyperlink.AddText("\n" + file.FileName);

I open the pdf with notepad and I can see the embedded files section:

/EmbeddedFiles 4 0 R
>>
endobj
4 0 obj
<<
/Names[(048a311d-3592-4931-a058-bee560f6e98b)16 0 R(048a311d-3592-4931-a058-bee560f6e98b)8 0 R(8a72c518-efcc-462f-8291-c5c4be576ac2)14 0 R(8a72c518-efcc-462f-8291-c5c4be576ac2)6 0 R(8fd27526-cf22-4d76-a3a3-809a77dd7783)18 0 R(8fd27526-cf22-4d76-a3a3-809a77dd7783)10 0 R(f9e77a84-2fb4-42d4-aeaf-c73859d6ebd6)20 0 R(f9e77a84-2fb4-42d4-aeaf-c73859d6ebd6)12 0 R]

I can also see some annotations with the specified names.

/Type/Annot
/NM(20c92414-6b11-4926-8bb1-8ddc3bca7ce0)
/M(D:20250408104110+03'00')
/Subtype/Link
/Rect[164.85 562.42 196.85 597.237]
/BS <</Type/Border/W 0>>
/Border [0 0 0]
/A
<<
/Type/Action
/S/GoToE
/D(048a311d-3592-4931-a058-bee560f6e98b)
>>
>>
endobj

Am I missing something from adding the links to the embedded document?

---Edit
Also I can see and open the embedded documents from the Attachments section of the pdf Reader. It is just the link that doesn't work.

Thank you.

[mitsakosgr]

For anyone looking for the same.

AddHyperlinkToEmbeddedDocument() adds a hyperlink to a Destination (destinationPath) of the Embedded document, and not the document itself.

As mentioned in the comments:

    // Summary:
    //     Adds a new Hyperlink of Type "EmbeddedDocument". The target is a Bookmark in
    //     an embedded Document in this Document.
    //
    // Parameters:
    //   destinationPath:
    //     The path to the named destination through the embedded documents. The path is
    //     separated by '\' and the last segment is the name of the named destination. The
    //     other segments describe the route from the current (root or embedded) document
    //     to the embedded document holding the destination. ".." references to the parent,
    //     other strings refer to a child with this name in the EmbeddedFiles name dictionary.

The destinationPath must follow the Destination specification of the PDF file and target a specific Destination.

If you have no specific destination, adding just a \ at the end, navigates to the first page of the embedded document. Omitting it causes the link to be out of specification and there is no navigation.

The correct way to open the document is:

var hyperlink = paragraph.AddHyperlinkToEmbeddedDocument(file.FileId + "\\");