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channelRecordTimeItems

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c# - VisualTreeHelper.GetChildrenCount 返回 0?

我正在使用VisualTreeHelper.GetChildrenCount()来查找子控件,但它总是返回0。这是我的代码//SomeControlshereC#代码:channelRecordTimeItems.ItemContainerGenerator.StatusChanged+=ChannelRecordTimeItemsStatusChangedEventHandler;privatevoidChannelRecordTimeItemsStatusChangedEventHandler(Objectsender,EventArgse){if(channelRecordTim