Flash 8 Documentation

Components Language Reference > Data binding classes (Flash Professional only) > CustomValidator class (Flash Professional only)

CustomValidator class (Flash Professional only)

ActionScript Class Name mx.data.binding.CustomValidator

You use the CustomValidator class when you want to perform custom validation of a data field contained by a component.

To create a custom validator class, you first create a subclass of mx.data.binding.CustomValidator that implements a method named validate(). This method is automatically passed a value to be validated. For more information about how to implement this method, see CustomValidator.validate().

Next, you assign your custom validator class to a field of a component by using the Component inspector's Schema tab. For an example of creating and using a custom validator class, see the Example section in the CustomValidator.validate() entry.

To assign a custom validator:

1. In the Component inspector, select the Schema tab.
2. Select the field you want to validate, and then select Custom from the Data Type
   pop-up menu.
3. Select the Validation Options field (at the bottom of the Schema tab), and click the magnifying glass icon to open the Custom Validation Settings dialog box.
4. In the ActionScript Class text box, enter the name of the custom validator class you created.

   NOTE

   To make this class available at runtime, you must include the data binding classes in your FLA file. For more information, see Making data binding classes available at runtime (Flash Professional only).

For an overview of the classes in the mx.data.binding package, see Classes in the mx.data.binding package (Flash Professional only).

Method summary for the CustomValidator class

The following table lists the methods of the CustomValidator class.

Version 8

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