在WPF C#TreeView中获取子节点的父节点

Question

我知道使用WPF在C#中编程与传统的C#程序不同,因此大多数在线资料都没有说明我需要的内容.

我的WPF窗口中有一个TreeView控件,其中有父节点和子节点.我想将它们存储在Node类型的列表中(id,name,parent).

我使用这个得到了所选项目/节点的名称:

private void TreeViewItem_OnItemSelected(object sender, RoutedEventArgs e)
{
    TreeViewItem item = treeView.SelectedItem as TreeViewItem;
    nameTxt.Text = item.Header.ToString();
}

我尝试在使用它之前立即获取子节点的Parent:

TreeViewItem item = treeView.SelectedItem as TreeViewItem;
nameTxt.Text = item.Parent.ToString();

但是,这将返回根父(A)而不是子父(即2).

我应该做些什么来改变孩子的直接父母而不是根父母？:)

编辑:这是XAML

<TreeView Name="treeView" HorizontalAlignment="Left" Height="564" Margin="10,68,0,0" VerticalAlignment="Top" Width="363">
     <TreeViewItem TreeViewItem.Selected="TreeViewItem_OnItemSelected"  Header="A" IsExpanded="True" Height="554" FontSize="18">
                <TreeViewItem Header="1" />
                <TreeViewItem Header="2" />
     </TreeViewItem>
</TreeView>

Answer 1

创建了一个小例子来演示您的问题

在MainWindow.xaml中

 <TreeView Name="tree">
    <TreeView>
        <TreeViewItem Header="North America" Selected="TreeViewItem_OnItemSelected">
            <TreeViewItem Header="USA">
                <TreeViewItem Header="New York"/>
                <TreeViewItem Header="Las Vegas"/>
                <TreeViewItem Header="Washington"/>
            </TreeViewItem>
            <TreeViewItem Header="Canada">
                <TreeViewItem Header="Toronto"/>
                <TreeViewItem Header="Quebec"/>
                <TreeViewItem Header="Montreal"/>
            </TreeViewItem>
            <TreeViewItem Header="Mexico"></TreeViewItem>
        </TreeViewItem>
    </TreeView>
</TreeView>

在Code Behind中,即MainWindow.xaml.cs

 private void TreeViewItem_OnItemSelected(object sender, RoutedEventArgs e)
    {
        TreeViewItem item = e.OriginalSource as TreeViewItem;
        if (item != null)
        {
            ItemsControl parent = GetSelectedTreeViewItemParent(item);

            TreeViewItem treeitem = parent as TreeViewItem;
            string MyValue= treeitem .Header.ToString();//Gets you the immediate parent
        }
    }
    public ItemsControl GetSelectedTreeViewItemParent(TreeViewItem item)
    {
        DependencyObject parent = VisualTreeHelper.GetParent(item);
        while (!(parent is TreeViewItem || parent is TreeView))
        {
            parent = VisualTreeHelper.GetParent(parent);
        }

        return parent as ItemsControl;
    }

它完成了.