Whether you want to restrict data inputs, ensure consistency, or avoid errors, data validation in Microsoft Excel is the tool for you. It can also serve as a vital safety net if you plan to share your ...

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 ...

To display a tooltip, you may use Comments, Notes, Data Validation Help Text, or Screen Tips. Let us see how they work in Excel and Google Sheets.

Writing code to validate Web-form input can be even more of a chore than implementing form-processing logic. But help is at hand, thanks to the Struts 2 framework. Oleg Mikheev looks under the hood of ...

In Part 1 of this series, I showed you an example of PowerShell's native validation capabilities. In that installment, I wrote a function that accepted a text string as input. The function then used ...