Assembly: Microsoft.Office.InfoPath (in microsoft.office.infopath.dll)
The code skeleton for an event handler associated with the Changing event, which uses the XmlChangingEventHandler delegate, should be added only from the Microsoft Office InfoPath 2007 user interface. For more information on how to add event handlers in InfoPath, see How Do I: Add an Event Handler.
This type or member can be accessed only from code running in forms opened in Microsoft Office InfoPath 2007.
For an example of using the XmlChangingEventHandler delegate, see the sample code in the Changing event of the XmlEvent class.