Verify that Cell Value Satisfies Data Validation Rules

Microsoft Excel allows users to add data validation rules to cells. For example, a decimal validation specifies that only numbers between 10 and 20 can be entered. If a user enters a different number. Microsoft Excel shows an error message and prompts them to enter a number in the correct range. If you copy and paste a number, say 3, into the cell, Excel does not run a validation check or show an error message.

Sometimes, it is necessary to verify whether a value satisfies the data validation rules applied to the cell programmatically. In the case above, for example, the entry should fail.

Introduction

Aspose.Cells provides the Cell.GetValidationValue() method to validate cell values programmatically. If the value in a cell does not satisfy the data validation rule applied to that cell, it returns False, else True.

The following sample code illustrates how the Cell.GetValidationValue() method works. First, it enters the value 3 into C1. Because this does not satisfy the data validation rule, the Cell.GetValidationValue() method returns False. Then, it enters the value 15 into C1. Because this value satisfies the data validation rule, the Cell.GetValidationValue() method returns True. Similarly, it returns False for value 30.

Output

 Is 3 a Valid Value for this Cell: False

Is 15 a Valid Value for this Cell: True

Is 30 a Valid Value for this Cell: False