.Net 4.0 下 虚拟化树节点展开问题

Question

.net 4.0虚拟化treeviewscroll

Answer 1

 <TreeView ItemsSource="{Binding}" VirtualizingStackPanel.IsVirtualizing="True"  VirtualizingStackPanel.VirtualizationMode="Standard">
            <TreeView.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding Parts}">
                    <TextBlock Text="{Binding Name}"/>
                    <HierarchicalDataTemplate.ItemTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding}"/>
                        </DataTemplate>
                    </HierarchicalDataTemplate.ItemTemplate>
                </HierarchicalDataTemplate>
            </TreeView.ItemTemplate>
        </TreeView> public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            IList<Car> list = new List<Car>();
            for (int i = 0; i < 5000; i ++)
            {
                list.Add(new Car() {Name = "test1" + i});
            }            foreach (var car in list)
            {
                car.Parts = new List<string>();
                for (int i = 0; i < 500; i++)
                {
                    car.Parts.Add("asdf" + i);
                }
            }            this.DataContext = list;
        }
    }    public class Car
    {
        public string Name { get; set; }        public List<string> Parts { get; set; }
    }这些就是测试代码的主要部分

Answer 2

asp.net？样式问题导致不可见的吧？

Answer 3

是 WPF 。不是样式引发的问题。