is it possible to read/write CustomDocumentProperties from an xlsx file without using Excel interop but purely by manipulating the XML or using a library like NPOI.
Basically, I need to in an MVC application to allow a user to download an xlsx file which has some CustomDocumentProperties pre set.
Thank you
Try to take a look at this : SpreadsheetLight
Especially this page might be interesting to you: DocumentProperties
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