I am maintaining an VSTO3 Excel Add-in.
The Excel workbooks are loaded from SharePoint.
When you click on a workbook on the SharePoint site you get the option for
"Read Only" or "Edit".
When "Read Only" is selected you:
a) get the "[Read-Only]" in the Excel caption for the workbook
b) get a Save As dialog box when clicking the Save button
c) the workbook ReadOnly property (in VSTO) is false

In the Add-in, how can I check whether the workbook is supposed to be read
only?
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Many thanks,
Gary Varga

Re-posted as I had no valid responses (sorry PeterT - yours didn't count)
and had logged in via an inactive MSDN account.