If data passes conversion and validation, the ItemChanged event is triggered. By default, the ItemChanged event accepts the data value and allows focus to change. You can write code for the ItemChanged event to do some additional processing. For example, you could perform some tests, reject the data, and have the column regain focus. The action after ItemChanged is determined by the value assigned to the Action property of the ItemChangedEventArgs class passed into the event-handling code.
