Treeview binding problem - wpf

Question

I have a window MainWindow.xaml and
private static Tutorial tutorial; there.
Also I have class Structure.cs where I describe child types
public class Tutorial
{
public string Name { get; set; }
public IList<Chapter> Chapters = new List<Chapter>();
}
public class Chapter
{
public string Name { get; set; }
public IList<Unit> Units = new List<Unit>();
}
public class Unit
{
public string Name { get; set; }
public IList<Frame> Frames = new List<Frame>();
...
}
I want to bind tutorial structure to treeview. How can I do this?
I tried this way.
<TreeView Grid.Row="2" x:Name="treeViewStruct" Margin="5,0,5,0" Background="LemonChiffon" BorderBrush="Bisque" BorderThickness="1" ScrollViewer.VerticalScrollBarVisibility="Auto" IsTextSearchEnabled="True" Cursor="Hand">
<TreeView.Resources>
<HierarchicalDataTemplate DataType = "{x:Type Structure:Chapter}"
ItemsSource = "{Binding Path=Units}">
<TextBlock Text="{Binding Path=Name}"/>
</HierarchicalDataTemplate>
<DataTemplate DataType="{x:Type Structure:Unit}">
<TextBlock Text="{Binding Path=Name}"/>
</DataTemplate>
</TreeView.Resources>
</TreeView>
It doesn't work.
Please, help! I'm a newbie in WPF. I need dynamic tree
so that when I add a chapter or a unit in the object tutorial, tree is updated.
And for this way of binding please throw the idea how can I get a collection item, when I selected some tree node.

Answer 1

This may help :
<HierarchicalDateTemplate DataType = "{x:Type local:Tutorial}"
ItemsSource="{Binding Chapters}">
<TextBlock Text="{Binding Name}"/>
</HierarchicalDateTemplate>
<HierarchicalDateTemplate DataType = "{x:Type local:Chapter}"
ItemsSource="{Binding Units}"
<TextBlock Text="{Binding Name}"/>
</HierarchicalDateTemplate>
<DateTemplate DataType = "{x:Type local:Unit}"
<TextBlock Text="{Binding Name}"/>
</DateTemplate>