1.xaml

xmlns:local="clr-namespace:YaoMinSys.Class"

2.class

namespace YaoMinSys.Class{    class PropertyNodeItem    {        public int ID { get; set; }        public string DisplayName { get; set; }        public List
     
       Children { get; set; }        public PropertyNodeItem()        {            Children = new List
      
       ();        }    }}
      
     

3.xaml.cs

private void Page_Loaded(object sender, RoutedEventArgs e)        {            ShowTreeView();        }        private void ShowTreeView()        {            List
     
       itemlist = new List
      
       ();            try            {                YaoMinSys.BLL.ZiDianLei ZDLBll = new BLL.ZiDianLei();                DataSet ZDLDs = ZDLBll.GetList("");                for (int i = 0; i < ZDLDs.Tables[0].Rows.Count; i++)                {                    PropertyNodeItem Parent = new PropertyNodeItem                    {                        ID = int.Parse(ZDLDs.Tables[0].Rows[i]["ZDLID"].ToString()),                        DisplayName = ZDLDs.Tables[0].Rows[i]["ZDLeiMing"].ToString(),                                            };                                       YaoMinSys.BLL.ZiDianXiang ZDXBll = new BLL.ZiDianXiang();                    DataSet ZDXDs = ZDXBll.GetList(" ZDLID = " + ZDLDs.Tables[0].Rows[i]["ZDLID"]);                    for (int j = 0; j < ZDXDs.Tables[0].Rows.Count; j++)                    {                        PropertyNodeItem children = new PropertyNodeItem                        {                            ID = int.Parse(ZDXDs.Tables[0].Rows[j]["ZDXID"].ToString()),                            DisplayName = ZDXDs.Tables[0].Rows[j]["ZDXiang"].ToString()                        };                        Parent.Children.Add(children);                    }                    itemlist.Add(Parent);                }                this.Treeview.ItemsSource = itemlist;                            }            catch (Exception)            {                throw;            }        }        private void TextBlock_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)        {            TextBlock tb = (TextBlock)sender;            MessageBox.Show("Text :"+tb.Text+"ID :"+tb.Tag);        }