Have you ever found yourself frustrated with an Excel workbook that seems to lag, break, or throw errors at the worst possible time? If so, there’s a good chance the culprit is one of Excel’s most ...

Excel’s data validation feature offers an efficient way to perform a variety of tasks. This collection of techniques demonstrates several handy ways to put data validation to work. From the ebook: ...

When multiple data variables are accommodated in a project, the time and spatial grids of those variables must be identical. As such, you must control the data other people enter. That’s when you need ...

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 ...

Follow the steps below to create a drop-down list using data validation in Excel. If you want to add a message pop up, you can click the Input Message tab and check the checkbox for “Show input ...

An curved arrow pointing right. Data validation in Excel allows you to create drop-down menus right inside individual cells. You can also restrict the types of values entered into different cells.

One way businesses can save time and money is using Excel spreadsheets as data tables in which to store customer information, inventory details or other important data. Excel has several features that ...

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 ...