A Details View Mode Event Args object is passed to the event handler, which allows you to determine the new mode, to determine whether the mode change was a result of the user canceling an edit operation, or to cancel the mode change.
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On Bubble Event(Object source, Event Args e) at System.
Raise Bubble Event(Object source, Event Args args) at System.
Information regarding the origin and location of the exception can be identified using the exception stack trace below.[Http Exception (0x80004005): The Details View ' Details View1' fired event Mode Changing which wasn't handled.] System.