WPF 获取 ListView DataTemplate 中控件值

RT

虽然DataTemplate 是用来绑定的,一般用ONE TWOWAY 来绑定传递或获取数据.

但是今天这个需求真是没办法,在绑定的模板内添加了一个非绑定的数据,需要手动取值.

解决方案原理:

https://msdn.microsoft.com/zh-cn/library/bb613579.aspx

            foreach (var item in FListView.Items)            {                var myListBoxItem = (ListViewItem)FListView.ItemContainerGenerator.ContainerFromItem(item);                // Getting the ContentPresenter of myListBoxItem                var myContentPresenter = FindVisualChild<ContentPresenter>(myListBoxItem);                // Finding textBlock from the DataTemplate that is set on that ContentPresenter                DataTemplate myDataTemplate = myContentPresenter.ContentTemplate;                var obj = myDataTemplate.FindName("CheckNum", myContentPresenter);//CheckNum 是在模板内定义的 x:Name                var checkNum = obj as NumericControl;//自定义控件                if (checkNum != null)                {//...do something                }            }

        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;        }