GroupDocs.Metadata for .NET provides functionality that allows working with ONE files created by different versions of Microsoft OneNote. Please see the code samples below for more information.
Inspecting Note documents The inspection feature that is introduced in this section doesn’t work with metadata directly but extracts some useful pieces of information that can be considered as metadata under some circumstances. For example, you may want to obtain information about pages in a note document....You are welcome to view and edit metadata of PDF, DOC, DOCX,...