Expander 中 ContentTemplate 绑定数据，新手谢谢

[夺命胖子]

 <!--Expander内容模板开始-->
                    <controlsToolkit:Expander.ContentTemplate>
                        <DataTemplate>
                            <StackPanel HorizontalAlignment="Left">
                                <ListBox x:Name="lsbNodeList" Margin="5"  MinHeight="100" MinWidth="100" Opacity="0" >
                                    <ListBox.ItemTemplate>
                                        <DataTemplate>
                                            <TextBlock Text="{Binding Path=AreaName}" Margin="5" Width="100" />
                                        </DataTemplate>
                                    </ListBox.ItemTemplate>
                                </ListBox>
                            </StackPanel>
                        </DataTemplate>
                    </controlsToolkit:Expander.ContentTemplate>
                    <!--Expander内容模板结束-->

如上代码，是Expander.ContentTemplate 内容，

后台有

 public ObservableCollection<TravelNode> travlnodes = new ObservableCollection<TravelNode>();

TravelNode 类

public class TravelNode : INotifyPropertyChanged
    {
        private string _areaname;
        public TravelNode(string areaname)
        {
            this.AreaName = areaname;
        }
        public string AreaName
        {
            get
            {
                return _areaname;
            }
            set
            {
                if (string.Compare(_areaname, value) == 0) return;
                _areaname = value;
                OnPropertyChanged("AreaName");
            }
        }
        protected virtual void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }

        #region INotifyPropertyChanged 成员

        public event PropertyChangedEventHandler PropertyChanged;

        #endregion
    }

我在MainPage_Load中绑定

 private void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            travlnodes.Add(new TravelNode("wgewgwg"));
            travlnodes.Add(new TravelNode("wgewgwewgwg"));
            travlnodes.Add(new TravelNode("wgewgwg"));
            travlnodes.Add(new TravelNode("wgewegwegwgwg"));
            travlnodes.Add(new TravelNode("wgewjjgwg"));
            travlnodes.Add(new TravelNode("wgerjjwgwg"));
            travlnodes.Add(new TravelNode("wgetrjwgwg"));
            travlnodes.Add(new TravelNode("wehewhwhhmt"));
            List<ListBox> lbs = this.GetChildObjects<ListBox>(this.sampleExpander.ContentTemplate.LoadContent(), "");
            if (lbs.Count > 0)
            {
                lbs[0].ItemsSource = travlnodes;
            }
        }
   /// <summary>
        /// 查询指定的子控件，name 为空所有子控件
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <param name="name"></param>
        /// <returns></returns>
        public List<T> GetChildObjects<T>(DependencyObject obj, string name) where T : FrameworkElement
        {
            DependencyObject child = null;
            List<T> childList = new List<T>();
            for (int i = 0; i <= VisualTreeHelper.GetChildrenCount(obj) - 1; i++)
            {
                child = VisualTreeHelper.GetChild(obj, i);
                if (child is T && (((T)child).Name == name || string.IsNullOrEmpty(name)))
                {
                    childList.Add((T)child);
                }
                childList.AddRange(GetChildObjects<T>(child, ""));
            }
            return childList;
        }

为什么无法得到数据

[jv9]

得不到数据的意思是无法显示数据集合到UI对么？

试着Debug，看看 return childList;是否正常，集合是否为空？

List<ListBox> lbs = this.GetChildObjects<ListBox>(this.sampleExpander.ContentTemplate.LoadContent(), "");


lbs是否为空？

[夺命胖子]

DataTemplate 嵌套似乎不行，后来用的Content属性可以了，

[夺命胖子]

来接分吧。。

[渔舟唱晚，雁阵惊寒]

[luhuaxiang86]

DataTemplate 嵌套似乎不行，后来用的Content属性可以了，
----
我也遇到了类似的问题，请问具体怎么解决的？
谢谢