RAD Studio VCL Reference
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TCustomDataSetPageProducer.Notification Method

Overrides the inherited method to respond to messages that the dispatcher is going away.

Pascal
procedure Notification(AComponent: TComponent; Operation: TOperation); override;
C++
virtual __fastcall Notification(TComponent * AComponent, TOperation Operation);

After calling the inherited method, Notification checks whether this call was triggered by the removal of the dispatcher. If so, the Dispatcher property is set to nil. NULL. 

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