Enables you to cancel window closing on the client side.
The Closing event's data class is ASPxClientPopupWindowCancelEventArgs. 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. Inherited from ASPxClientCancelEventArgs.|
|closeReason||Gets the value that identifies the reason the popup window is about to close.|
|window||Gets the popup window object related to the event.|
The Closing event occurs on the client side when a control's window is going to be closed. Write a Closing event handler to perform specific actions on the client side and cancel window closing, if necessary.