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CHAPTER
Using Data
Validation
IN THIS CHAPTER
An overview of Excel’s data
validation featurePractical examples of using
data validation formulasT
his chapter explores a very useful Excel feature: data validation. Data
validation enables 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 certain rules that dic-
tate what can be entered into a cell. For example, 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 25.1.
FIGURE 25.1Displaying a message when the user makes an invalid entry.