using System;using System.Net;using System.Windows;using System.Windows.Controls;using System.Windows.Documents;using System.Windows.Ink;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Animation;using System.Windows.Shapes;using System.Collections.ObjectModel;namespace SGSGHome.Views.File{    public class CatItem    {        public long ID { get; set; }        public string CategoryName { get; set; }        public long? ParentID { get; set; }        public ObservableCollection
     
       Items { get; set; }        public CatItem(long id, string catName, long? parentID)        {            this.ID = id;            this.CategoryName = catName;            this.ParentID = parentID;            this.Items = new ObservableCollection
      
       ();        }    }}
      
     

public IList
     
       CatList { get; set; }        void client_GetFileCategoryListCompleted(object sender, CoreService.GetFileCategoryListCompletedEventArgs e)        {            //递归填充TreeListView            this.CatList = e.Result;            var root = CatList.First(x => x.ParentID == null);            var rootItem = new CatItem(root.ID, root.CategoryName, null);            AddChild(root.ID, rootItem);            tv.ItemsSource = new ObservableCollection
      
       () { rootItem };            tv.AutoExpandItems = true;        }        //递归方法        void AddChild(long parentID, CatItem parentItem)        {            var filterList = CatList.Where(x => x.ParentID == parentID).ToList();            foreach (var tt in filterList)            {                var childItem = new CatItem(tt.ID, tt.CategoryName, tt.ParentID);                parentItem.Items.Add(childItem);                var childrenList = CatList.Where(x => x.ParentID == tt.ID).ToList();                if (childrenList.Count > 0)                {                    AddChild(tt.ID, childItem);                }            }        }