本文介绍了如何获取在列表框中选择的多个项目的索引的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想获取给定列表框中选择的所有项目的索引，有一个SelectedItems方法可以返回项目集合:
I want to get indices of all the items that are selected in given listbox, there is a SelectedItems method which return a collection of items:
listbox.SelectedItems
但是没有SelectedIndices方法.该集合也不包含每个项目的索引.
But there is no SelectedIndices method. The collection also doesn't contain an index for each item.
我怎么知道在列表框中选择了哪个项目?
How can I know which item was selected in my listbox?
推荐答案
您可以简单地使用IndexOf在项目集合中找到它们的索引.例如，在绑定项目集合时:
You can simply use IndexOf to find their index in the collection of items. For example, when binding a collection of items:
// create your list of items to display
List<MyObject> items = new List<MyObject>();
// NOTE: populate your list here!
// bind the items
listBox.ItemsSource = items;
您可以找到选定的索引，如下所示:
You can find the selected index as follows:
var selectedItem = (MyObject)listBox.SelectedItems[0]
int index = items.IndexOf(selectedItem);
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