Hi,
I created a template in Excel 2010 version(.xlsx) to be used for SSIS packages. I have specified a field as Dateformat but in SSIS package it was recognized as string even after specifying date in both data validation part in data tab and in home tab. But when i save as the same file in .xls format i am able to access the field as a Date. My SSIS package takes as input both .xls and .xlsx files. What should i do to change the field as Date in .xlsx format? And also i am getting a compatibility checker message each time i save in .xls format. I have vlookup and formulas in most of the columns. Is it necessary to restrict in .xlsx format if there is more vlookup?