jiny13579

아래 이벤트 구독, 구독취소 메서드 추가해주니 되네요..강의 영상에는 없던거 같던데...확인 부탁드립니다~&nbsp;<code>public event EventHandler CanExecuteChanged</code><code>{</code><code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; add { CommandManager.RequerySuggested += value; }</code><code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;remove { CommandManager.RequerySuggested -= value; }</code><code>}</code>&nbsp;&nbsp;

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