WPF - How to get only one expander expanded at any one time
问题 I've got a StackPanel with a group of expanders in, how do I set it so that only expander is expanded at any one time? Cheers AW 回答1: I didn't really want to do it like this as it required putting code (C#) in the class behind file for the window (I'm trying to avoid this completely by use of ViewModels etc). Ideally I would have described this in XAML. I hooked up every Expander 'Expanded' event I was interested in and did the following: private void HandleExpanderExpanded(object sender,