Detect and Manipulate Fonts Used in XPS Documents with C#

I am looking to develop/locate a find-replace tool for XPS documents.

Does anyone know how to detect the the fonts used within XPS Documents within C#? And also how to produce an ODTTF Fils based on TypeFace开发者_运维问答 Characters/Font?

Kind regards,

Matt

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You can use the first 32 bytes of the ODTTF to determine its name once you're in XPS package (System.IO.Packaging).