Data Validation

This article will tell you how to add a drop-down list in excel cells. You can add a drop-down list in one excel cell or multiple excel cells at the same time.

This article will tell you how to add excel data validation rule to help you to validate the cell input data so that it can avoid inputting incorrect data into the related cell. The data validation rule can also be used to find out the invalid data cells that are not allowed by the validation …

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This article will show you some examples of how to validate text data input in excel cells. The first example shows you how to restrict the input text length. The second example shows you how to allow input text only in the excel cell. The third example shows you how to allow input text that …

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This article will show you some examples of how to allow input numbers only in excel cells.

When a user inputs a date or time value in an Excel cell, you may want to validate the user input value to check whether the date or time value is correct or not. And when you open an existing worksheet that contains a lot of date-type values, you may want to validate those existing …

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