c# - How to create annotation using PdfSharp to highlight text of existing PDF -


i know whether possible create text highlight annotation in existing pdf using pdfsharp?

in pdfsharp documentation, see examples of pdftextannotation & pdfrubberstampannotation, did not find sample code following annotations mentioned in documentation.

pdflineannotation, pdfsquareannotation, pdfcircleannotation,  pdfmarkupannotation, pdfhighlightannotation, pdfunderlineannotation, pdfsquigglyannotation, pdfsoundannotation, pdfmovieannotation.

are these annotations yet implemented in pdfsharp? if has implemented, please point me code samples.


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