The parent item is not fully loaded because its children attribute is not an array that lists all the children of this item.

父条目不能被完全加载，因为其children属性不是一个列出所有子条目的数组。

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You can use this property, for example, to determine whether the parent item is selected, checked, or focused.

例如，可以使用此属性确定父项是否被选择、选中或具有焦点。

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Collapse selected item (tree views and search results). If the item is already collapsed, this will select its parent item.

折叠选择的项(树视图和搜索结果)。如果该项已经折叠，这将选择它的父项。

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Collapse selected item (tree views and search results). If the item is already collapsed, this will select its parent item.

折叠选择的项(树视图和搜索结果)。如果该项已经折叠，这将选择它的父项。

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