' For complete examples and data files, please go to https://github.com/groupdocs-watermark/GroupDocs.Watermark-for-.NET
Using doc = Document.Load(Utilities.MapSourceFilePath(DocFilePath))
' Search for hyperlinks only.
doc.SearchableObjects.PdfSearchableObjects = PdfSearchableObjects.Hyperlinks
' The code for working with found watermarks goes here.
Dim watermarks = doc.FindWatermarks()
End Using