把潜在的树形结构数据转换成树形结构数据

实体类：

 1 using System.Collections.Generic;
 2 using System.ComponentModel;
 3
 4 namespace TreeViewBindingDemo
 5 {
 6     public class NodeEntry : INotifyPropertyChanged
 7     {
 8         public NodeEntry()
 9         {
10             this.NodeEntrys = new List<NodeEntry>();
11             this.ParentID = -1;
12             this.IsChecked = true;
13         }
14         int id;
15         public int ID
16         {
17             get { return id; }
18             set { id = value; this.OnPropertyChanged("ID"); }
19         }
20         string name;
21         public string Name
22         {
23             get { return name; }
24             set { name = value; this.OnPropertyChanged("Name"); }
25         }
26         public int ParentID { get; set; }
27         bool isChecked;
28         public bool IsChecked
29         {
30             get { return isChecked; }
31             set { isChecked = value; this.OnPropertyChanged("IsChecked"); }
32         }
33         List<NodeEntry> nodeEntrys;
34         public List<NodeEntry> NodeEntrys
35         {
36             get { return nodeEntrys; }
37             set
38             {
39                 nodeEntrys = value;
40                 this.OnPropertyChanged("NodeEntrys");
41             }
42         }
43         public event PropertyChangedEventHandler PropertyChanged;
44         private void OnPropertyChanged(string prop)
45         {
46             if (this.PropertyChanged != null)
47                 this.PropertyChanged(this, new PropertyChangedEventArgs(prop));
48         }
49     }
50
51 }

转换代码：

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Threading.Tasks;
  6 using System.Windows;
  7 using System.Windows.Controls;
  8 using System.Windows.Data;
  9 using System.Windows.Documents;
 10 using System.Windows.Input;
 11 using System.Windows.Media;
 12 using System.Windows.Media.Imaging;
 13 using System.Windows.Navigation;
 14 using System.Windows.Shapes;
 15
 16 namespace TreeViewBindingDemo
 17 {
 18     /// <summary>
 19     /// MainWindow.xaml 的交互逻辑
 20     /// </summary>
 21     public partial class MainWindow : Window
 22     {
 23         List<NodeEntry> m_NodeEntrys;
 24         List<NodeEntry> m_outputList;
 25         public MainWindow()
 26         {
 27             InitializeComponent();
 28             m_NodeEntrys = new List<NodeEntry>()
 29         {
 30             new NodeEntry { ID = 2, Name = "北京市", ParentID = 1 },
 31             new NodeEntry { ID = 1, Name = "中国" },
 32             new NodeEntry { ID = 3, Name = "吉林省", ParentID = 1 },
 33             new NodeEntry { ID = 4, Name = "上海市", ParentID = 1 },
 34             new NodeEntry { ID = 5, Name = "海淀区", ParentID = 2 },
 35             new NodeEntry { ID = 6, Name = "朝阳区", ParentID = 2 },
 36             new NodeEntry { ID = 7, Name = "大兴区", ParentID = 2 },
 37             new NodeEntry { ID = 8, Name = "白山市", ParentID = 3 },
 38             new NodeEntry { ID = 9, Name = "长春市", ParentID = 3 },
 39             new NodeEntry { ID = 10, Name = "抚松县", ParentID = 8 },
 40             new NodeEntry { ID = 11, Name = "靖宇县", ParentID = 8 },
 41             new NodeEntry { ID = 13, Name = "靖宇县" },
 42             new NodeEntry { ID = 14, Name = "无名村", ParentID = 13 },
 43         };
 44             m_outputList = Bind(m_NodeEntrys);
 45             this.treeView1.ItemsSource = m_outputList;
 46             this.treeView2.ItemsSource = m_outputList;
 47         }
 48
 49         private List<NodeEntry> Bind(List<NodeEntry> nodes)
 50         {
 51             List<NodeEntry> outputList=new List<NodeEntry>();
 52             for (int i = 0; i < nodes.Count; i++)
 53             {
 54                 nodes[i].IsChecked = false;
 55                 if (nodes[i].ParentID == -1)
 56                 {
 57                     outputList.Add(nodes[i]);
 58                 }
 59                 else
 60                 {
 61                     FindDownward(nodes,nodes[i].ParentID).NodeEntrys.Add(nodes[i]);
 62                 }
 63             }
 64             return outputList;
 65         }
 66
 67         private NodeEntry FindDownward(List<NodeEntry> nodes, int id)
 68         {
 69             if (nodes == null) return null;
 70             for (int i = 0; i < nodes.Count; i++)
 71             {
 72                 if (nodes[i].ID == id)
 73                 {
 74                     return nodes[i];
 75                 }
 76             }
 77             return null;
 78         }
 79
 80         private void btnOK_Click(object sender, RoutedEventArgs e)
 81         {
 82             try
 83             {
 84                 m_NodeEntrys.Add(new NodeEntry { ID = 14, IsChecked = true, Name = "法国" });
 85                 m_outputList.Add(new NodeEntry { ID = 14, IsChecked = true, Name = "法国" });
 86                 //m_outputList = Bind(m_NodeEntrys);
 87                 NodeEntry node = new NodeEntry();
 88                 this.treeView1.ItemsSource = m_outputList;
 89                 this.treeView2.ItemsSource = null;
 90                 this.treeView2.ItemsSource = m_outputList;
 91             }
 92             catch (Exception ex)
 93             {
 94             }
 95         }
 96         private void btnCancel_Click(object sender, RoutedEventArgs e)
 97         {
 98
 99         }
100
101         //双向绑定改名，选择
102         private void treeView2_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
103         {
104             NodeEntry item = (NodeEntry)this.treeView2.SelectedItem;
105             item.Name = "dido";
106             item.IsChecked = true;
107             MessageBox.Show(item.ID.ToString());
108         }
109
110
111     }
112 }