我有ListBox
。
我需要获取UI中可见的所有项目的列表。
如何做到这一点?
答案 0 :(得分:0)
listbox.Items.Cast<UIElement>().Where(x => x.IsVisible)
答案 1 :(得分:0)
要获取所有控件,请使用此代码
foreach (var item in list.Items)
{
var myContentPresenter = FindVisualChild<ContentPresenter>(list.ItemContainerGenerator.ContainerFromItem(item));
DataTemplate myDataTemplate = myContentPresenter.ContentTemplate;
TextBox tb = (TextBox)myDataTemplate.FindName("tb", myContentPresenter);
}
FindVisualChild 方法:
private childItem FindVisualChild<childItem>(DependencyObject obj)
where childItem : DependencyObject
{
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
{
DependencyObject child = VisualTreeHelper.GetChild(obj, i);
if (child != null && child is childItem)
{
return (childItem)child;
}
else
{
childItem childOfChild = FindVisualChild<childItem>(child);
if (childOfChild != null)
return childOfChild;
}
}
return null;
}
XAML 看起来像这样:
...
<ListBox Name="list">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBox x:Name="tb"/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
...