Treeview With One To Many Linq to SQL tables - wpf

Question

I have a couple tables dealing with cars:
<Table(Name:="tblManufacturer")> Public Class dbManufacturers
Private _ManufacturerID As Integer
<Column(Storage:="_ManufacturerID", DbType:="int IDENTITY NOT NULL", IsPrimaryKey:=True, IsDbGenerated:=True, Name:="ManufacturerID")> _
Public Property ManufacturerID() As Integer
Get
Return Me._ManufacturerID
End Get
Set(value As Integer)
Me._ManufacturerID = value
End Set
End Property
Private _ManufacturerName As String
<Column(Storage:="_ManufacturerName", DbType:="Varchar(50)", Name:="ManufacturerName")> _
Public Property ManufacturerName() As String
Get
Return Me._ManufacturerName
End Get
Set(value As String)
Me._ManufacturerName = value
End Set
End Property
Private _Models As EntitySet(Of dbModels) = New EntitySet(Of dbModels)
<Association(Storage:="_Models", DeleteRule:="CASCADE", OtherKey:="ManufacturerID")> _
Public Property Models As EntitySet(Of dbModels)
Get
Return _Models
End Get
Set(value As EntitySet(Of dbModels))
_Models.Assign(value)
End Set
End Property
End Class
<Table(Name:="tblModels")> Public Class dbModels
Private _ModelID As Integer
<Column(Storage:="_ModelID", DbType:="int IDENTITY NOT NULL", IsPrimaryKey:=True, IsDbGenerated:=True, Name:="ModelID")> _
Public Property ModelID() As Integer
Get
Return Me._ModelID
End Get
Set(value As Integer)
Me._ModelID = value
End Set
End Property
Private _ManufacturerID As Integer
<Column(Storage:="_ManufacturerID", DbType:="int", Name:="ManufacturerID")> _
Public Property ManufacturerID() As Integer
Get
Return Me._ManufacturerID
End Get
Set(value As Integer)
Me._ManufacturerID = value
End Set
End Property
Private _ModelName As String
<Column(Storage:="_ModelName", DbType:="Varchar(200)", Name:="ModelName")> _
Public Property ModelName() As String
Get
Return Me._ModelName
End Get
Set(value As String)
Me._ModelName = value
End Set
End Property
End Class
The XAML:
<TreeView Name="TreeView1" Margin="3" ItemsSource="{Binding ElementName=ManufacturerInfo, Path=tblManufacturers}">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate>
<TextBlock Text="{Binding Path=ManufacturerName}" />
<HierarchicalDataTemplate.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Source=Models, Path=ModelName}" />
</DataTemplate>
</HierarchicalDataTemplate.ItemTemplate>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
The code behind:
Public Class ManufacturerInfo
Private LinqDB As New DataContext(My.Settings.dbConnection)
Property tblManufacturers As Table(Of dbManufacturers) = LinqDB.GetTable(Of dbManufacturers)()
Public Sub New()
InitializeComponent()
End Sub
Private Sub ManufacturerInfo_Loaded(sender As Object, e As System.Windows.RoutedEventArgs) Handles Me.Loaded
Me.DataContext = Me
End Sub
End Class
So I get the list of Manufacturers, but not the nested models. Is there a way to make this work, or do I have to change how I'm doing my LINQ query?
I'm having trouble finding similar treeview examples.

Answer 1

Figured it out.
Still have a bit to learn about the subtle art of data binding.
<TreeView Name="TreeView1" Margin="3" ItemsSource="{Binding ElementName=ManufacturerInfo, Path=tblManufacturers}">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Path=Models}">
<TextBlock Text="{Binding Path=ManufacturerName}" />
<HierarchicalDataTemplate.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=ModelName}" />
</DataTemplate>
</HierarchicalDataTemplate.ItemTemplate>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>