Binding for nested data

Question

I have a class

public class MyData
{
    public string Caption { get; set; }
    public List<Data1> ListData1 {get; set;}
}

public class Data1
{
    public string FirstName { get; set; }
    public List<Data2> ListData2 { get; set; }
}

public class Data2
{
    public string LastName { get; set; }
}

data must be displayed in the following form

I do so - to link an MyData ListBox filled with data. For him, pointing DataTemplate, bring the code

            <!--  MyData  -->
            <Grid Grid.Column="0">

                <Grid.RowDefinitions>
                    <RowDefinition />
                </Grid.RowDefinitions>

                <TextBlock Grid.Row="0" Text="{Binding Caption}" />

            </Grid>

            <!--  Data1  -->
            <ListBox 
                     Grid.Column="1"
                     DisplayMemberPath = "FirstName"
                     ItemsSource="{Binding ListData1 }" />
            <!--  -->        

            <!--  Data2  -->
            <ListBox x:Name="lbData2"
                     Grid.Column="2"
                     DisplayMemberPath = "LastName"
                     ItemsSource="{Binding ????}" />

        </Grid>
    </DataTemplate>

How to Make Binding for lbData2? ListData1.ListData2 option does not work.

Answer 1

I believe that you can just use the following binding syntax:

ItemsSource="{Binding ListData1/ListData2}" 

This means bind to the ListData2 property of current or selected instance of ListData1.

You can find out more from the Binding.Path Property page at MSDN.