WPF Treeview 获取鼠标所在位置的节点对象

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/Vblegend_2013/article/details/80839114

Wpf下的 TreeView 判断鼠标所在节点对象，当然适合所有 ListBox ViewList  DataGridView 等容器控件

        public void Item_MouseDown(object sender, MouseButtonEventArgs e)
        {
            TreeView Tree = sender as TreeView;
            Point point = e.GetPosition(Tree);
            var element = Tree.GetElementFromPoint<TreeViewItem>(point);
            if (element != null)
            {
                Console.WriteLine(element);
            }
            Console.WriteLine(e.ClickCount);
        }

        public static T GetElementFromPoint<T>(this ItemsControl itemsControl, Point point) where T : class
        {
            UIElement element = itemsControl.InputHitTest(point) as UIElement;
            while (element != null)
            {
                if (element == itemsControl)
                    return default(T);
                object item = itemsControl.ItemContainerGenerator.ItemFromContainer(element);
                if (!item.Equals(DependencyProperty.UnsetValue))
                    return item as T;
                if (element is T)
                {
                    return element as T;
                }
                element = (UIElement)VisualTreeHelper.GetParent(element);
            }
            return default(T);
        }