获取的TreeViewItem所选项目的一个TreeView [英] Getting TreeViewItem for the selected item in a TreeView

问题描述

我有一个绑定到是有父子关系的数据集一个TreeView。我怎么会从树视图入围树型视图？请帮帮我。我的代码如下

XAML： -

 < TreeView控件NAME =tvPersonal背景=透明的ItemsSource ={结合RootNodes}SelectedItemChanged =tvPersonal_SelectedItemChanged> 
< TreeView.ItemTemplate> 
< HierarchicalDataTemplate的ItemsSource ={结合rsParentChild}> 
< TextBlock的文本={绑定名称}/> 
< / HierarchicalDataTemplate> 
< /TreeView.ItemTemplate> 
  

 公共主窗口（）
 
 {
的InitializeComponent（）; 
的DataSet DS =新BL.BLMenu（）GetAllMenues（新BOModule {名称= Modules.Personnel}）; 
 ds.Tables [0] = .TableName菜单; 
的DataRelation关系=新的DataRelation（rsParentChild，
 ds.Tables [菜单。列[MENUID]，
 ds.Tables [菜单。列[的ParentId]）; 
 relation.Nested = TRUE; 
 ds.Relations.Add（关系）; 
 BOMenu MNU =新BOMenu（）; 
 BOMenu.RootNodes = ds.Tables [菜单]默认视图。 
 BOMenu.RootNodes.RowFilter =的ParentId IS NULL; 
 
 this.DataContext =这一点; 
 stbiDate.Content = DateTime.Now; 
 
} 
公共数据视图RootNodes 
 {
 {返回BOMenu.RootNodes; } 
} 
  

BOMenu类别： -

 公共类BOMenu 
 {
公共字符串MENUID 
 {
搞定; 
组; 
} 
 
公共字符串名称
 {
获得; 
组; 
} 
 
公共字符串的ParentId 
 {
获得; 
组; 
} 
 
公众诠释优先
 {
搞定; 
组; 
} 
 
公共静态数据视图RootNodes 
 {
搞定; 
组; 
} 
 
} 
  

解决方案

尝试

 树型视图TVI = myTree.ItemContainerGenerator.ContainerFromItem（的SelectedItem）为树型视图; 
  

或通过以下links.Hope这有助于

的SelectedItem在WPF树视图

<一个HREF =http://stackoverflow.com/q/1238304/217880> C＃/ WPF：从树视图获取的SelectedItem

的http://social.msdn.microsoft.com/forums/en -US / WPF /线程/ 36aca7f7-0b47-488b-8e16-840b86addfa3 /

I have a TreeView that is bound to a dataset which is having parent child relation. How i will get seleted TreeViewItem from the TreeView? Please help me. My code is below.

xaml:-

<TreeView Name="tvPersonal"  Background="Transparent"  ItemsSource="{Binding RootNodes}" SelectedItemChanged="tvPersonal_SelectedItemChanged">    
 <TreeView.ItemTemplate>
   <HierarchicalDataTemplate ItemsSource="{Binding rsParentChild}">
     <TextBlock Text="{Binding Name}" />
   </HierarchicalDataTemplate>
 </TreeView.ItemTemplate>

 public MainWindow()   

        {    
            InitializeComponent();    
            DataSet ds = new BL.BLMenu().GetAllMenues(new BOModule { Name = Modules.Personnel });
            ds.Tables[0].TableName = "Menu";
            DataRelation relation = new DataRelation("rsParentChild",
                    ds.Tables["Menu"].Columns["MenuId"],
                    ds.Tables["Menu"].Columns["ParentId"]);
            relation.Nested = true;    
            ds.Relations.Add(relation);
            BOMenu mnu = new BOMenu();    
            BOMenu.RootNodes = ds.Tables["Menu"].DefaultView;
            BOMenu.RootNodes.RowFilter = "ParentId IS NULL";    

            this.DataContext = this;
            stbiDate.Content = DateTime.Now;

        }
        public DataView RootNodes    
        {
            get { return BOMenu.RootNodes; }
        }

BOMenu Class :-

 public class BOMenu
    {
        public string MenuId
        {
            get;
            set;
        }

        public string Name
        {
            get;
            set;
        }

        public string ParentId
        {
            get;
            set;
        }

        public int Priority
        {
            get;
            set;
        }

        public static DataView RootNodes
        {
            get;
            set;
        }

    }

解决方案

Try

TreeViewItem tvi = myTree.ItemContainerGenerator.ContainerFromItem(SelectedItem) as TreeViewItem;

or go through the below links.Hope this helps

SelectedItem in a WPF Treeview

C#/WPF: Get SelectedItem from TreeView?

http://social.msdn.microsoft.com/forums/en-US/wpf/thread/36aca7f7-0b47-488b-8e16-840b86addfa3/

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