Deletes a card with the specified key value.
DeleteCardByKey( key: any ): void
An object that uniquely identifies the card.
Once the DeleteCardByKey method is called, the ASPxCardView.CardDeleting event is raised. It allows you to cancel the delete operation. After a card has been deleted, the ASPxCardView.CardDeleted event is raised.
End-users can delete cards by clicking the Delete command.