This custom input box validation sample is a demonstration of how you can extend
the input box validators.
This sample demonstrates the two specific enhancements to the validators that are
supplied with the MS CUI Toolkit:
- the validator can be made to appear like any other validator in your application
in both form and format
- further validation logic can be applied to either a single control or a group of
controls in order to achieve the specific error checking required for the context
in which it is being used