Block bad data, duplicates, and incorrect dates with these custom rules.

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 ...

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 ...

Data validation input messages are cleaner, more stable, and more professional.

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