Forms Data Controls :: How To Determine Excel .XLSX Version From Uploaded File

Aug 10, 2010

In my application I've allowed users to upload Excel 2003 .xls files, and import them into a Gridview. This has been working fine using the following connection string:

[Code]....

Now my users are using Excel 2003, 2007 or 2010, I need to allow the newer file extensions (.XLSX) to be accessible too.

Therefore, within the connection string above I presume I could change the Excel version from 8.0 to 9.0 or 10.0 respectively, but is there much difference between Excel 2007 and Excel 2010 files?

If so, is it possible to 'detect' the Excel file version so that I can use the appropriate connection string to read the data from the files?

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