有没有一种方法来配置WPF 列表框，使得它不可能取消选择/取消选择一个项目？所以总有一个项目选择？

Is there a way to configure the WPF ListBox such that it's not possible to deselect/unselect an item? So there is always an item selected?

我的列表框绑定到的ObservableCollection＆LT; MyClass的＆GT;

推荐答案

您可以处理的SelectionChanged 事件，并选择是否的SelectedItem 的计算结果为空。要重新选择已为未选中，你可以跟踪最后选择的项目在私人领域的项目，应该始终在的SelectionChanged 事件进行更新。

You can handle the SelectionChanged event and set a selection if the SelectedItem evaluates to null. To reselect an item that has been unselected you can keep track of the last selected item in a private field, which should always be updated in the SelectionChanged event.