在WPF treeview中获取完整路径？

Question

如果我编程方式创建一个WPF树视图，例如：

// TreeView treeView; <- added in the designer 
TreeViewItem rootNode = new TreeViewItem(); 
rootNode.Header = "RootNode" 
treeView.Items.Add(rootNode); 

TreeViewItem subNode1 = new TreeViewItem(); 
subNode1.Header = "SubNode1"; 
rootNode.Items.Add(subNode1); 

TreeViewItem subNode2 = new TreeViewItem(); 
subNode2.Header = "SubNode2"; 
rootNode.Items.Add(subNode2); 

不过，我想获得的路径到达某个节点在TreeView很像在System.Windows.Forms.TreeNode类的FullPath属性。所以subNode2的路径是RootNode//SubNode2。我该怎么做呢？

编辑：我不是在寻找手动解决方案，但我想知道是否有像FullPath等效的访问器，或者如果我要以错误的方式使用WPF TreeView类。例如。我看过DisplayMemberPath和SelectedValuePath，但他们似乎没有提供我以后的结果。

Answer 1

看看这里我的答案：

Silverlight: Determine parent TreeViewItem?

确定路径则很简单：

public string GetFullPath(TreeViewItem node) 
{ 
    if (node == null) 
    throw new ArgumentNullException(); 

    var result = Convert.ToString(node.Header); 

    for (var i = GetParentItem(node); i != null; i = GetParentItem(i)) 
    result = i.Header + "\\" + result; 

    return result; 
} 

Answer 2

请参见下面的代码。

所以这个函数返回一个堆栈，其中最顶端的项目将是根，最后一个项目将是元素的直接父项。

public partial class Window1 : Window 
{ 
    public Window1() 
    { 
     InitializeComponent(); 

     TreeViewItem rootNode = new TreeViewItem(); 
     rootNode.Header = "RootNode"; 
     treeView.Items.Add(rootNode); 

     TreeViewItem subNode1 = new TreeViewItem(); 
     subNode1.Header = "SubNode1"; 
     rootNode.Items.Add(subNode1); 

     TreeViewItem subNode2 = new TreeViewItem(); 
     subNode2.Header = "SubNode2"; 
     rootNode.Items.Add(subNode2); 

     TreeViewItem subNode3 = new TreeViewItem(); 
     subNode3.Header = "SubNode3"; 
     subNode2.Items.Add(subNode3); 
    } 

    public static Stack<TreeViewItem> GetNodeParent(UIElement element) 
    { 
     Stack<TreeViewItem> tempNodePath = new Stack<TreeViewItem>(); 
     // Walk up the element tree to the nearest tree view item. 
     TreeViewItem container = element as TreeViewItem; 

     while ((element != null)) 
     { 
      element = VisualTreeHelper.GetParent(element) as UIElement; 
      container = element as TreeViewItem; 
      if(container!=null) 
      tempNodePath.Push(container); 
     } 

     return tempNodePath; 
    } 

    private void treeView_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e) 
    { 
     Stack<TreeViewItem> path = GetNodeParent(e.NewValue as UIElement); 
    } 
}