Hot answers tagged openxml
No, this is not possible in the SharePoint Sandbox. You can't reference other DLL's and if you used the OpenXml source code you would still get problems since it uses namespaces in .Net which are not allowed in the Sandbox.
Contrary to my original comments, I have verified that this does not work in Office 365, however it does work in On Premise SharePoint 2010 Sandbox. Anyone interested in doing this in SharePoint 2010 sandbox can take a look at my post here: http://blog.johnnybouder.com/post/2012/03/25/OpenXML-in-the-Sandbox.aspx
I think the path your are considering would work. You would want to create an event receiver in Visual Studio that runs on item additions and changes. Microsoft has a lot of examples on using Open XML with Word: http://msdn.microsoft.com/en-us/office/ee358826.aspx and http://msdn.microsoft.com/en-us/library/cc850833.aspx. Microsoft also has a lot of ...
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