Silverlight 中给TreeView添加复选框

代码如下:

        List<IrrlSysFun> datas;
        public CWRoleRight()
        {
            InitializeComponent();
            BLL.SysFunBLL.FindAll(list => {
                datas = list.ToList();
                LoadTree(treeView2.Items, 0);
                
            });
        }

        private void LoadTree(ItemCollection itemCollection, int p)
        {
            var subList = datas.Where(d => d.pid == p).ToList();
            foreach (var item in subList)
            {
                TreeViewItem tv = new TreeViewItem();
                StackPanel sp = new StackPanel();
                CheckBox cb = new CheckBox();
                cb.Checked += new RoutedEventHandler(cb_Checked);
                cb.Content = item.nodeText;
                cb.Tag = tv;
                sp.Children.Add(cb);
                tv.Header = sp;
                itemCollection.Add(tv);
                tv.IsExpanded = true;
                LoadTree(tv.Items, item.nodeid);
            }
        }

界面效果: