WPF TreeView ItemContainerStyle和ItemTemplate ViewModel Binding IsSelected

记录一下 直接上代码

<TreeView ItemsSource="{Binding}" Name="Tree">
            <TreeView.ItemContainerStyle>
                <Style TargetType="{x:Type TreeViewItem}">
                    <Setter Property="IsSelected" Value="{Binding Mode=TwoWay, Path=IsSelected}"/>
                </Style>
            </TreeView.ItemContainerStyle>
            <TreeView.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding Items}">
                    <Label Content="{Binding Name}"/>
                    <HierarchicalDataTemplate.ItemTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding Path= SomeData}"/>
                        </DataTemplate>
                    </HierarchicalDataTemplate.ItemTemplate>
                </HierarchicalDataTemplate>
            </TreeView.ItemTemplate>
        </TreeView>

using System.Collections.Generic;
using System.ComponentModel;
using System.Windows;

namespace TreeViewSpike
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
            List = new List<ItemList>
                       {
                           new ItemList
                               {
                                   Name ="MyList",
                                   Items = new List<Item> {new Item("1"),
                                                           new Item("2")}
                               },
                           new ItemList
                               {
                                   Name ="MySecondList",
                                   Items = new List<Item> {new Item("3"),
                                                           new Item("4")}
                               }
                       };
            Tree.DataContext = List;
            List[1].IsSelected = true;
        }

        public List<ItemList> List { get; set; }
    }

    public class ItemList: INotifyPropertyChanged
    {
        public string Name{ get; set;}
        private bool _isSelected;
        public bool IsSelected
        {
            get { return _isSelected; }
            set
            {
                _isSelected = value;
                if (PropertyChanged != null)
                    PropertyChanged(this,
                        new PropertyChangedEventArgs("IsSelected"));
                if(_isSelected)
                   MessageBox.Show(Name +" selected");
            }
        }

        public List<Item> Items { get; set; }
        public event PropertyChangedEventHandler PropertyChanged;
    }

    public class Item
    {
        public string SomeData { get; set; }
        public Item(string data)
        {
            SomeData = data;
        }
    }
}

自定义ViewModel，需要传递当前选中节点的名称 ，在选中值IsSelected变化时目前的做法通过委托传递当前选中节点的名称