WPF TreeView绑定数据

1、前台代码

<TreeView Name="tvOrg" HorizontalAlignment="Left"  Width="210" SelectedItemChanged="tvOrg_SelectedItemChanged" >
                <TreeView.ItemContainerStyle>
                    <Style TargetType="{x:Type TreeViewItem}">
                        <Setter Property="IsExpanded" Value="True"></Setter>
                    </Style>
                </TreeView.ItemContainerStyle>
                <TreeView.ItemTemplate>

                    <HierarchicalDataTemplate  ItemsSource="{Binding Path=Children}">

                        <StackPanel Orientation="Horizontal">

                            <Image VerticalAlignment="Center" Source="/Images/WinFolder.gif" Width="16" Height="16" Margin="0,0,2,2"></Image>

                            <TextBlock VerticalAlignment="Center" Name="nodeName" Text="{Binding Name}"></TextBlock>

                            <!--<Image VerticalAlignment="Center" Source="{Binding EditIcon}" Margin="2,0,0,0"></Image>-->

                            <StackPanel.ToolTip>

                                <TextBlock VerticalAlignment="Center" Text="{Binding Name}" TextWrapping="Wrap" MaxWidth="200" ></TextBlock>

                            </StackPanel.ToolTip>

                        </StackPanel>

                    </HierarchicalDataTemplate>

                </TreeView.ItemTemplate>

                <TreeView.ContextMenu><!--右击菜单-->
                    <ContextMenu>
                        <MenuItem Name="tvcmAdd" Header="添加" Click="btnAddOrg_Click">
                            <!--<MenuItem.Template>
                                <ControlTemplate>
                                    <Image Source="/Images/AppIcon.ico"  Width="16" Height="16"></Image>
                                </ControlTemplate>
                            </MenuItem.Template>-->
                        </MenuItem>
                        <MenuItem Name="tvmEdit" Header="编辑" Click="btnEditOrg_Click"></MenuItem>
                        <MenuItem Name="tvcmDelete" Header="删除" Click="btnDelOrg_Click"/>
                    </ContextMenu>
                </TreeView.ContextMenu>
            </TreeView>

2、数据获取

　　1)数据载体

　　

public class PropertyNodeItem
    {
        public string Icon { get; set; }
        public string EditIcon { get; set; }
        public string DisplayName { get; set; }
        public string Name { get; set; }
        public long id { get; set; }
        public Guid? OrgGuid { get; set; }
        public Guid? OrgParentGuid { get; set; }
        public long parentId { get; set; }
        public bool IsExpanded { get; set; }
        public int SortIndex { get; set; }
        public List<PropertyNodeItem> Children { get; set; }
        public PropertyNodeItem()
        {
            Children = new List<PropertyNodeItem>();
        }
    }
View Code

　　2)处理数据

　　

 1 /// <summary>
 2         /// 赋值给Node集合
 3         /// </summary>
 4         /// <param name="dt"></param>
 5         public List<PropertyNodeItem> Transform()
 6         {
 7             DataTable dt = sysOrganization.LoadOrgData().Tables[0];
 8             List<PropertyNodeItem> listNode = new List<PropertyNodeItem>();
 9 
10             listNode.Add(new PropertyNodeItem
11             {
12                 Name = "组织机构",
13                 parentId = -1,
14                 id = 0,
15                 SortIndex = 0
16             });
17 
18             foreach (DataRow dr in dt.Rows)
19             {
20                 PropertyNodeItem temp = ConvertToTableModel(dr);
21                 //赋值
22                 listNode.Add(temp);
23             }
24 
25             List<PropertyNodeItem> outputList = Bind(listNode);
26             //List<PropertyOrgNode> result = new List<PropertyOrgNode>();
27 
28             //foreach (var item in outputList.OrderBy(p => p.SortIndex))
29             //{
30             //    PropertyOrgNode temp = new PropertyOrgNode();
31             //    temp.Item = item;
32             //    result.Add(temp);
33             //}
34             //TreeViewtest1.ItemsSource = outputList;
35             return outputList.OrderBy(p => p.SortIndex).ToList();
36         }
37 
38         /// <summary>
39         /// 赋值给Node
40         /// </summary>
41         /// <param name="dr"></param>
42         /// <returns></returns>
43         public static PropertyNodeItem ConvertToTableModel(DataRow dr)
44         {
45             PropertyNodeItem result = new PropertyNodeItem();
46             if (false == DBNull.Value.Equals(dr["OrgID"].ToString())) result.id = Int64.Parse(dr["OrgID"].ToString());
47             if (false == DBNull.Value.Equals(dr["OrgName"])) result.Name = dr["OrgName"].ToString();
48             if (false == DBNull.Value.Equals(dr["OrgParentID"])) result.parentId = Int64.Parse(dr["OrgParentID"].ToString());
49             if (false == DBNull.Value.Equals(dr["SortIndex"])) result.SortIndex = Int32.Parse(dr["SortIndex"].ToString());
50             return result;
51         }
52 
53         /// <summary>
54         /// 绑定树
55         /// </summary>
56         List<PropertyNodeItem> Bind(List<PropertyNodeItem> nodes)
57         {
58             //定义一个返回值变量
59             List<PropertyNodeItem> outputList = new List<PropertyNodeItem>();
60 
61             //循环遍历控件
62             for (int i = 0; i < nodes.Count; i++)
63             {
64                 if (nodes[i].parentId == -1) outputList.Add(nodes[i]);//第一次调用时，ParentID为-1 也就是父级
65 
66                 else FindDownward(nodes, nodes[i].parentId).Children.Add(nodes[i]);
67             }
68             return outputList;
69         }
70         /// <summary>
71         /// 向下查找
72         /// </summary>
73         /// <param name="nodes"></param>
74         /// <param name="id"></param>
75         /// <returns></returns>
76         PropertyNodeItem FindDownward(List<PropertyNodeItem> nodes, long id)
77         {
78             if (nodes == null) return null;
79             for (int i = 0; i < nodes.Count; i++)
80             {
81                 //寻找子节点
82                 if (nodes[i].id == id)
83                     return nodes[i];
84 
85 
86                 //判断NodeNew是否为空，在这里NodeNew不会为空，所以可不用
87                 PropertyNodeItem node = FindDownward(nodes[i].Children, id);
88                 if (node != null) return node;
89             }
90             return null;
91         }
View Code

3、数据绑定

private void BindToTree()
        {
            List<PropertyNodeItem> result = sysOrgBLL.Transform();

            this.tvOrg.ItemsSource = result;
        }
View Code

 

posted on 2015-10-20 09:41  柠小萌(ōベ)  阅读(193)  评论(0)    收藏  举报

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