我将如何保持树形控件的状态？ 我想它崩溃，以保持树的状态时，它的数据提供者获取更新，而不是。

How would I go about keeping the state of a tree control? I'd like to keep the state of the tree when it's data provider gets updated, instead of it collapsing.

推荐答案

怎么是这样的：

    var openItems:Object = tree.openItems;
    tree.dataProvider = myNewDataProvider;
    tree.openItems = openItems;
    tree.validateNow();

我不知道有多好，这将工作，如果新的dataProvider是从旧的完全不同，但它的工作原理，当你延迟加载树节点。

I'm not sure how well this will work if the new dataProvider is radically different from the old one, but it works when you're lazy loading tree nodes.