'宣言 Public ReadOnly Property Action As CollectionAction
'使用法 Dim instance As NotifyCollectionEventArgs Dim value As CollectionAction value = instance.Action
public CollectionAction Action {get;}
'宣言 Public ReadOnly Property Action As CollectionAction
'使用法 Dim instance As NotifyCollectionEventArgs Dim value As CollectionAction value = instance.Action
public CollectionAction Action {get;}