WPF中TreeView数据结构解析

XAML.CS代码：

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 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;

 namespace TreeViewBindingDemo
 {
     /// <summary>
     /// MainWindow.xaml 的交互逻辑
     /// </summary>
     public partial class MainWindow : Window
     {
         List<NodeEntry> m_NodeEntrys;
         List<NodeEntry> m_outputList;
         public MainWindow()
         {
             InitializeComponent();
             m_NodeEntrys = new List<NodeEntry>()
         {
             new NodeEntry { ID = , Name = "北京市", ParentID =  },
             new NodeEntry { ID = , Name = "中国" },
             new NodeEntry { ID = , Name = "吉林省", ParentID =  },
             new NodeEntry { ID = , Name = "上海市", ParentID =  },
             new NodeEntry { ID = , Name = "海淀区", ParentID =  },
             new NodeEntry { ID = , Name = "朝阳区", ParentID =  },
             new NodeEntry { ID = , Name = "大兴区", ParentID =  },
             new NodeEntry { ID = , Name = "白山市", ParentID =  },
             new NodeEntry { ID = , Name = "长春市", ParentID =  },
             new NodeEntry { ID = , Name = "抚松县", ParentID =  },
             new NodeEntry { ID = , Name = "靖宇县", ParentID =  },
             new NodeEntry { ID = , Name = "靖宇县" }
         };
             m_outputList = Bind(m_NodeEntrys);
             this.treeView1.ItemsSource = m_outputList;
             this.treeView2.ItemsSource = m_outputList;
         }

         private List<NodeEntry> Bind(List<NodeEntry> nodes)
         {
             List<NodeEntry> outputList=new List<NodeEntry>();
             for (int i = ; i < nodes.Count; i++)
             {
                 nodes[i].IsChecked = false;
                 if (nodes[i].ParentID == -)
                 {
                     outputList.Add(nodes[i]);
                 }
                 else
                 {
                     FindDownward(nodes,nodes[i].ParentID).NodeEntrys.Add(nodes[i]);
                 }
             }
             return outputList;
         }

         private NodeEntry FindDownward(List<NodeEntry> nodes, int id)
         {
             if (nodes == null) return null;
             for (int i = ; i < nodes.Count; i++)
             {
                 if (nodes[i].ID == id)
                 {
                     return nodes[i];
                 }
             }
             return null;
         }

         private void btnOK_Click(object sender, RoutedEventArgs e)
         {
             try
             {
                 m_NodeEntrys.Add(new NodeEntry { ID = , IsChecked = true, Name = "法国" });
                 m_outputList.Add(new NodeEntry { ID = , IsChecked = true, Name = "法国" });
                 //m_outputList = Bind(m_NodeEntrys);
                 NodeEntry node = new NodeEntry();
                 this.treeView1.ItemsSource = m_outputList;
                 this.treeView2.ItemsSource = null;
                 this.treeView2.ItemsSource = m_outputList;
             }
             catch (Exception ex)
             {
             }
         }
         private void btnCancel_Click(object sender, RoutedEventArgs e)
         {

         }

         //双向绑定改名，选择
         private void treeView2_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
         {
             NodeEntry item = (NodeEntry)this.treeView2.SelectedItem;
             item.Name = "dido";
             item.IsChecked = true;
             MessageBox.Show(item.ID.ToString());
         }

     }
 }

实体类：

 using System.Collections.Generic;
 using System.ComponentModel;

 namespace TreeViewBindingDemo
 {
     public class NodeEntry : INotifyPropertyChanged
     {
         public NodeEntry()
         {
             this.NodeEntrys = new List<NodeEntry>();
             this.ParentID = -;
             this.IsChecked = true;
         }
         int id;
         public int ID
         {
             get { return id; }
             set { id = value; this.OnPropertyChanged("ID"); }
         }
         string name;
         public string Name
         {
             get { return name; }
             set { name = value; this.OnPropertyChanged("Name"); }
         }
         public int ParentID { get; set; }
         bool isChecked;
         public bool IsChecked
         {
             get { return isChecked; }
             set { isChecked = value; this.OnPropertyChanged("IsChecked"); }
         }
         List<NodeEntry> nodeEntrys;
         public List<NodeEntry> NodeEntrys
         {
             get { return nodeEntrys; }
             set
             {
                 nodeEntrys = value;
                 this.OnPropertyChanged("NodeEntrys");
             }
         }
         public event PropertyChangedEventHandler PropertyChanged;
         private void OnPropertyChanged(string prop)
         {
             if (this.PropertyChanged != null)
                 this.PropertyChanged(this, new PropertyChangedEventArgs(prop));
         }
     }

 }

XAML代码：

 <Window x:Class="TreeViewBindingDemo.MainWindow"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:model="clr-namespace:TreeViewBindingDemo"
         Title="MainWindow" Height="" Width="">
     <Grid>
         <Grid.Resources>
             <HierarchicalDataTemplate DataType="{x:Type model:NodeEntry}" ItemsSource="{Binding NodeEntrys}">
                 <StackPanel Orientation="Horizontal" Margin="0,2,0,2">
                     <CheckBox Focusable="False"
                               VerticalAlignment="Center" IsChecked="{Binding IsChecked, Mode=TwoWay}"/>
                     <TextBlock Text="{Binding Name}" ToolTip="{Binding Name}" Tag="{Binding ID}"/>
                 </StackPanel>
                 <HierarchicalDataTemplate.ItemContainerStyle>
                     <Style TargetType="TreeViewItem">
                         <Setter Property="IsExpanded" Value="True" />
                     </Style>
                 </HierarchicalDataTemplate.ItemContainerStyle>
             </HierarchicalDataTemplate>
         </Grid.Resources>
         <Grid.ColumnDefinitions>
             <ColumnDefinition MinWidth="" Width="170*"/>
             <ColumnDefinition Width="1*" />
             <ColumnDefinition Width="" />
             <ColumnDefinition Width="" />
         </Grid.ColumnDefinitions>
         <Grid.RowDefinitions>
             <RowDefinition Height="40*" />
             <RowDefinition Height="" />
         </Grid.RowDefinitions>
         <GridSplitter Grid.Column="" Grid.RowSpan="" Name="gridSplitter1" HorizontalAlignment="Stretch" />
         <Button Content="确定" Grid.Column="" Grid.Row="" Height="" HorizontalAlignment="right" Margin="0,10,0,0" Name="btnOK" Click="btnOK_Click" VerticalAlignment="Top" Width="" IsDefault="True" />
         <Button Content="取消" Grid.Column="" Grid.Row="" Height="" HorizontalAlignment="right" Margin="0,10,10,0" Name="btnCancel" Click="btnCancel_Click" VerticalAlignment="Top" Width="" IsCancel="True" />
         <TreeView Grid.ColumnSpan=""  Name="treeView1" >
         </TreeView>
         <TreeView Grid.Column="" Grid.ColumnSpan=""  Name="treeView2" SelectedItemChanged="treeView2_SelectedItemChanged">
         </TreeView>
     </Grid>

 </Window>