Excel's data validation feature is more versatile than you might think. Learn how to use literal values, input values, list values, and even formulas to restrict input date values using data ...

I've got an Excel 97 worksheet in which I need to validate some cells. No problem, I'll just use Data->Validate, right? Wrong. The built in validation works well enough as long as the user doesn't ...

Learn how to use a data validation control to allow users to select when to run multiple VBA procedures in Microsoft Excel.

Excel Formulas Cannot Be Edited. Any program that doesn't do what you expect or let you make changes to something you should be able to edit is frustrating, and Excel is no exception. When it ...