C# 如何访问 ItemsControl 的子项？
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How do I access the children of an ItemsControl?
提问by James Hay
If i have a component derived from ItemsControl, can I access a collection of it's children so that I can loop through them to perform certain actions? I can't seem to find any easy way at the moment.
如果我有一个从 派生的组件ItemsControl，我是否可以访问它的子组件的集合，以便我可以遍历它们以执行某些操作？我目前似乎找不到任何简单的方法。
采纳答案by Thomas Levesque
回答by Neil Barnwell
I'm assuming ItemsControl.Items[index]doesn't work, then?
我假设ItemsControl.Items[index]不起作用，然后？
I'm not being funny, and I haven't checked for myself - that's just my first guess. Most often a control will have an items indexer property, even if it's databound.
我不是在开玩笑，我也没有检查过自己——这只是我的第一个猜测。大多数情况下，控件将具有项目索引器属性，即使它是数据绑定的。
回答by Seb Nilsson
See if this helps you out:
看看这是否对你有帮助：
foreach(var item in itemsControl.Items)
{
UIElement uiElement =
(UIElement)itemsControl.ItemContainerGenerator.ContainerFromItem(item);
}
There is a difference between logical items in a control and an UIElement.
控件中的逻辑项与UIElement.
回答by Junior Mayhé
To identify ItemsControl's databound child controls (like a ToggleButton), you can use this:
要识别ItemsControl的数据绑定子控件（如 a ToggleButton），您可以使用：
for (int i = 0; i < yourItemsControl.Items.Count; i++)
{
ContentPresenter c = (ContentPresenter)yourItemsControl.ItemContainerGenerator.ContainerFromItem(yourItemsControl.Items[i]);
ToggleButton tb = c.ContentTemplate.FindName("btnYourButtonName", c) as ToggleButton;
if (tb.IsChecked.Value)
{
//do stuff
}
}
