WPF Treeview 无限分级绑定集合数据

WPF Treeview 无限分级绑定集合数据

2013-04-28 16:42 by swarb, ... 阅读, ... 评论, 收藏, 编辑

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:mode="clr-namespace:WpfTreeviewDemo"
        Title="TreeView无限级树绑定事例" Height="300" Width="300" WindowStartupLocation="CenterScreen" DataContext="{Binding}" ResizeMode="CanMinimize">
   
       
           
                                   
               
           
       
       
   

 

 

using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Navigation;
 using System.Windows.Shapes;
 using System.Threading;
 using System.Diagnostics;
 using System.Windows.Markup;
 
 
 namespace WpfTreeviewDemo
 {
     //定义节点类Node
     public class Node
     {
         //构造函数
         public Node()
         {
             this.Nodes = new List();
         }
         public int ID { get; set; }//内码
         public string Name { get; set; }//名称
         public bool IsParent { get; set; }//是否父级
         public int OwnerID { get; set; }//上一级内码
         public List Nodes { get; set; }//节点集合
     }
 
     ///

     /// MainWindow.xaml 的交互逻辑
     ///

     public partial class MainWindow : Window
     {
         public MainWindow()
         {
             InitializeComponent();
             List nodesList = new List()//创建节点的数据集合对象
             {
                 new Node { ID = 1000, Name = "系统"    , IsParent=true,  OwnerID = 0    },
                 new Node { ID = 1100, Name = "软件设置", IsParent=false, OwnerID = 1000 },
                 new Node { ID = 1200, Name = "数据备份", IsParent=false, OwnerID = 1000 },
                 new Node { ID = 1300, Name = "数据恢复", IsParent=false, OwnerID = 1000 },
                 new Node { ID = 2000, Name = "基础资料", IsParent=true,  OwnerID = 0    },
                 new Node { ID = 2100, Name = "用户管理", IsParent=false, OwnerID = 2000 },
                 new Node { ID = 2200, Name = "用户组  ", IsParent=false, OwnerID = 2000 },
                 new Node { ID = 2300, Name = "组织机构", IsParent=false, OwnerID = 2000 },
             };
             List outputList = Bind(nodesList);// 绑定树
             this.TreeView.ItemsSource = outputList;//绑定TreeView.Items数据源
         }
 
         ///

         /// 绑定树
         ///

         List Bind(List nodes)
         {
             List outputList = new List();//定义节点集合outputList
             for (int i = 0; i < nodes.Count; i++)//按节点数量循环
             {
                 if (nodes[i].OwnerID == 0)//判断是否根节点
                 {
                     outputList.Add(nodes[i]);//是根节点的，节点集合中加上节点
                 }
                 else
                 {
                     FindDownward(nodes, nodes[i].OwnerID).Nodes.Add(nodes[i]);//不是根节点的向下查找
                 }
             }
             return outputList;
         }
 
         ///

         /// 向下查找
         ///

         Node FindDownward(List nodes, int id)
         {
             if (nodes == null)
             {
                 return null;//节点集合为空返回null
             }
             for (int i = 0; i < nodes.Count; i++)//按nodes节点集合数量循环
             {
                 if (nodes[i].ID == id)//判断节点的id是否与父节点相同
                 {
                     return nodes[i];//是父节点返回节点
                 }
                 Node node = FindDownward(nodes[i].Nodes, id);//向下查找
                 if (node != null)//节点不等于返回节点
                 {
                     return node;
                 }
             }
             return null;//返回空值
         }
     }   
 }