XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save workbooks, but can also use the XLS format.
I'm working on an app that takes an .xls file as input, does a bunch of SQL lookups on the data, and then outputs the results of two sql queries into two sheets of an output .XLS file.<BR><BR>The ...