ContainerBindingCollection no longer working

[Ross]

The following code was working until I upgraded to the latest dlls. Now when I expand a node the section that used to display child information is blank:

<UserControl.Resources>
    <telerik:ContainerBindingCollection x:Key="RadTreeViewBindings">
        <telerik:ContainerBinding Binding="{Binding IsExpanded, Mode=TwoWay}" PropertyName="IsExpanded" />
    </telerik:ContainerBindingCollection>
</UserControl.Resources>

<Grid x:Name="LayoutRoot" Background="White">
    <telerikGridView:RadTreeListView x:Name="SourceDataTreeView" AutoExpandGroups="True" AutoGenerateColumns="False" IsReadOnly="True" ItemsSource="{Binding Path=Children}" RowIndicatorVisibility="Collapsed" SelectionMode="Single" ShowColumnHeaders="False" ShowGroupPanel="False" ShowInsertRow="False" telerik:ContainerBinding.ContainerBindings="{StaticResource RadTreeViewBindings}">
        <telerikGridView:RadTreeListView.ChildTableDefinitions>
            <telerikGridView:TreeListViewTableDefinition ItemsSource="{Binding Path=Children}" telerik:ContainerBinding.ContainerBindings="{StaticResource RadTreeViewBindings}"/>
        </telerikGridView:RadTreeListView.ChildTableDefinitions>
        <telerikGridView:RadTreeListView.ItemTemplate>
            <telerik:HierarchicalDataTemplate telerik:ContainerBinding.ContainerBindings="{StaticResource RadTreeViewBindings}" />
        </telerikGridView:RadTreeListView.ItemTemplate>
        <telerikGridView:RadTreeListView.RowStyle>
            <Style TargetType="GridView:GridViewRow">
                <Setter Property="f:SetterValueBindingHelper.PropertyBinding">
                    <Setter.Value>
                        <f:SetterValueBindingHelper Binding="{Binding Path=IsExpanded}" Property="IsExpanded" />
                    </Setter.Value>
                </Setter>
            </Style>
        </telerikGridView:RadTreeListView.RowStyle>
        <telerikGridView:RadTreeListView.Columns>
            <telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Path=Name}" Header="Name" />
            <telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Path=Value}" Header="Value" />
            <telerikGridView:GridViewDataColumn DataMemberBinding="{Binding Path=PropertyType}" Header="Type" />
        </telerikGridView:RadTreeListView.Columns>
    </telerikGridView:RadTreeListView>
</Grid>

[Vlad]

Hello,

 Can you post more info in which version this worked? Several months ago we changed the treelist expand/collapse logic due to performance reasons and with latest versions of RadTreeListView binding to IsExpanded is not supported. 

All the best,
Vlad
the Telerik team

[Ross]

It worked w/ version 2010.2.924.1040.