Message in Chinese (Simplified) (中文(简体))![](/img/flags/zh-chs.png)
当该集合为空或被清除时,CompositeCollectionView 只支持 NotifyCollectionChangeAction.Reset。
Unlocalized message![](/img/flags/en.png)
CompositeCollectionView only supports NotifyCollectionChangeAction.Reset when the collection is empty or is being cleared.
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