Declare EventHandlers as Static or Non-Static in WPF Controls?

The stated reason for keeping a local copy of EventHandler is that the WPF commanding sub-system uses weak references internally and therefore we need to keep a reference to the specific delegate object that is added to the CanExecuteChanged event. If fact, anytime we are adding to any commanding sub-system event, we should also observe this practice, as you have for SecurityTypeChanged .

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