Microsoft Office Tutorials and References
In Depth Information
Chapter 20: Using Data Val-
In This Chapter
• An overview of Excel's data validation feature
• Practical examples of using data validation formulas
This chapter explores a very useful Excel feature: data validation. Data validation enables you to add rules for
what's acceptable in specific cells and also allows you to add dynamic elements to your worksheet without using
any macro programming.
About Data Validation
The Excel data validation feature allows you to set up rules that dictate what can be entered into a cell. For ex-
ample, you may want to limit data entry in a particular cell to whole numbers between 1 and 12. If the user makes
an invalid entry, you can display a custom message, such as the one shown in Figure 20-1.
Figure 20-1: Displaying a message when the user makes an invalid entry.
Excel makes it easy to specify the validation criteria, and you can also use a formula for more complex criteria.
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