annotation.GetUniqueID() returns null when XFDF contains "name" attribute

[mickael.vanstraelen]

Hi Priya,

Thank you for reaching out.

Could you give us a full snippet showing how you are using the API.
getUniqueID is expecting a PDFNET Annot not an Annotation.

Have you read this guide?

How do I keep track of my own annotations?

Question: We want to add annotations, and then later on process them. However the document might already have its own annotations. How do we “keep track” our Annotations? Answer: The basic way of tracking annotations is through the Annotations optional ID entry. This needs to be unique for the document, so generating a GUID would suffice. Setting/Getting GUID of annotation annot.SetUniqueID(Guid.NewGuid().ToString()); // and to get back SDF.Obj obj = annot.GetUniqueID(); if(obj != null && …

Could you provide the file you used for that annotation? Importing it on our sample file is not enough.

Best Regards,
Mickaël.