Fires on the client side before the expansion state of a row is changed by end-user interaction.
The RowExpandedChanging event's data class is ASPxClientVerticalGridRowExpandingEventArgs. The following properties provide information specific to this event:
|cancel||Gets or sets a value indicating whether the action which raised the event should be canceled.|
|row||Gets the expanded row. Inherited from ASPxClientVerticalGridRowExpandedEventArgs.|
Write an RowExpandedChanging event handler to perform specific actions on the client side before changing the expansion state of a row by end-user interaction. You can use the event parameter's properties to identify the row being manipulated, specify whether a postback should be generated to pass the event processing to the server side and cancel execution of the command, if necessary.