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As a programmer I eventually located the file type of a .d extension file loaded successfully by Excel 2007 by interrogating Workbook.FileFormat via VBA, but can a normal user determine it is a DBF4 file when it is not saveable (without addins)?

(Specifically when you choose Save As, normally the existing file format is selected.)

FYI I've already checked Prepare > Document Properties, but I see nothing there. IIRC previous versions of Excel (or I might be thinking of Word) had the option to always display the file conversion dialogue box when opening a file, but I can't see a way to do so with Excel 2007 (and, in any case, the file isn't being converted -- it is being opened as a DBF4 file format).

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Have you seen this workaround? It's not .fileformat so it's not an "answer" – Raystafarian Feb 8 '12 at 20:34
@Raystafarian: Your comment above may be worthwhile as an answer to the linked question. – Mark Hurd Feb 9 '12 at 5:19
The Excel 2007-2010 32-bit add-in called SaveDBF might be of help. You can try out the demo at – user118076 Feb 13 '12 at 1:01

Per this documentation

dBase III and IV. You can open these files formats in Excel, but you cannot save an Excel file to dBase format.

Unfortunately, there is not a .fileformat for .dbf

share|improve this answer
As the question implies, I now know Excel 2007 is able to open these files, but I cannot determine a way for a normal user to determine what has happened. – Mark Hurd Feb 9 '12 at 5:23

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