'宣言 Public ReadOnly Property OldItem As System.Object
'使用法 Dim instance As EventCollectionChangeEventArgs Dim value As System.Object value = instance.OldItem
public System.object OldItem {get;}
'宣言 Public ReadOnly Property OldItem As System.Object
'使用法 Dim instance As EventCollectionChangeEventArgs Dim value As System.Object value = instance.OldItem
public System.object OldItem {get;}