c# - ListCollectionView 是否泄漏内存？

Question

我一直在研究如何避免因 View 模型中对 INotifyCollectionChanged 事件的强引用而导致的内存泄漏。我正在尝试使用 ListCollectionView 看看它是否适合我。我认为以下是内存泄漏，我做错了吗？

var stuff = new ObservableCollection<string>();
while (true)
{
    var result = new ListCollectionView(stuff);
    // Just to keep make sure that the memory I'm seeing 
    // isn't waiting to be GC'd
    GC.Collect(); 
}

Answer 1

ListCollectionView 的文档不是很好，但如果您注意到有一个方法 DetachFromSourceCollection。此调用的备注中提到取消订阅和允许垃圾回收。

    var stuff = new ObservableCollection<string>();
    while (true)
    {
        ListCollectionView result = new ListCollectionView(stuff);

        //Use this method to unsubscribe to events on the underlying collection and allow the CollectionView to be garbage collected.
        result.DetachFromSourceCollection();
        //When finished set to null
        result = null;
        GC.Collect();
    }