For processing data coming from a measurement system, I had to process big XLS files (> 50 MB).
Here is a DLL to do this.
Features:
- do not need EXCEL or other compatible spreadsheet software
- file types supported: BIFF8
- corresponding EXCEL versions:
. Microsoft Excel 97 (XL8),
. Microsoft Excel 2000 (XL9),
. Microsoft Excel 2002 (XL10),
. Microsoft Excel 2003 (XL11),
. Microsoft Excel 2007 (XL12)
- character set: standard ANSI
- sheets: data only
- formulas: result only
- numbers with full precision
Here you can find how to use and download xlsread.dll
http://perso.numericable.fr/hserindat/xlsread/.