Binding recursively in a WPF TreeView - wpf

Question

I am trying to bind recursively to the children of an item in a TreeView. From what I can see on MSDN HierarchicalDataTemplate is the way to go, but thus far I've only been partially successful.
My class:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DocumentText test = new DocumentText();
this.DataContext = test;
for (int i = 1; i < 5; i++)
{
test.AddChild();
}
foreach (DocumentText t in test.Children)
{
t.AddChild();
t.AddChild();
}
}
}
partial class DocumentText
{
private string _name;
public string Name
{
get { return _name; }
set { _name = value; }
}
public override string ToString()
{
return Name;
}
public List<DocumentText> _children;
public List<DocumentText> Children
{
get { return this._children; }
}
public DocumentText()
{
_name = "Test";
_children = new List<DocumentText>();
}
public void AddChild()
{
_children.Add(new DocumentText());
}
}
My XAML:
In mainview.xaml:
<Window x:Class="treetest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<TreeView Name="binderPanel" DockPanel.Dock="Left"
MinWidth="150" MaxWidth="250" Background="LightGray"
ItemsSource="{Binding Children}">
</TreeView>
</Grid>
</Window>
In app.xaml:
<HierarchicalDataTemplate x:Key="BinderTemplate"
DataType="{x:Type src:DocumentText}" ItemsSource="{Binding Path=/Children}">
<TreeViewItem Header="{Binding}"/>
</HierarchicalDataTemplate>
This code produces a list of the first children, but the nested children are not displayed.

Answer 1

The primary problem in what you posted is that you haven't connected the HierarchicalDataTemplate as the TreeView's ItemTemplate. You need to either set ItemTemplate="{StaticResource BinderTemplate}" or remove the x:Key to apply the template to all DocumentText instances. You should also change the TreeViewItem in the template to a TextBlock - the TreeViewItem is generated for you and what you put in that template is applied to it as a HeaderTemplate.