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 ...

We’ll add two items to the dropdown list, but you can add many more. Now, let’s insert the data validation control. Using the simple demonstration sheet shown in Figure A, click B2.

As such, you must control the data other people enter. That’s when you need Data Validation. Microsoft Excel makes this job simple. How to use Data Validation for Excel Cells ...

When you update this spreadsheet with new or different data, you won’t have to re-create the validation rule, but you will need to click Circle Invalid Data again. This tool would be useful to bring ...

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 ...