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 ...

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 ...

Input validation is the single best defense against injection and XSS vulnerabilities. Done right, proper input validation techniques can make web-applications invulnerable to such attacks. Done ...

Whenever I write an advanced PowerShell function or script that uses parameters, I find it very helpful to validate any data upfront before my script gets too far. The last thing I want is my script ...

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 ...