hi,
i get this exception: "System.NullReferenceException: Object reference not set to an instance of an object.
at Telerik.Windows.Controls.RadTreeViewItem.OnHeaderMouseLeftButtonDown(Object sender, MouseButtonEventArgs e)
after selecting (by mouse) node on the tree.
Remark : i don't get the exception if i used the keyboard for change selected node (item)
this is my XAML deceleration
<Grid x:Name="LayoutRoot">
<Grid.Resources>
<view:CheckBoxConverter x:Key="checkBoxConverter" />
<telerikControls:ContainerBindingCollection x:Name="BindingsCollection">
<telerikControls:ContainerBinding PropertyName="CheckState" Binding="{Binding IsChecked, Converter={StaticResource checkBoxConverter}}"/>
<!--<telerikControls:ContainerBinding PropertyName="Header" Binding="{Binding Name}"/>-->
<telerikControls:ContainerBinding PropertyName="DefaultImageSrc" Binding="{Binding IconName}"/>
<!--Other Container Bindings-->
</telerikControls:ContainerBindingCollection>
<telerikControls:HierarchicalDataTemplate x:Key="AlienTemplate" ItemsSource="{Binding SubLayers}" telerikControls:ContainerBinding.ContainerBindings="{StaticResource BindingsCollection}">
<telerikNavigation:RadTreeViewItem IsEditable="False" Header="{Binding Name}" >
</telerikNavigation:RadTreeViewItem>
</telerikControls:HierarchicalDataTemplate>
</Grid.Resources>
<Border Background="#995C90B2" BorderThickness="1" CornerRadius="5"
HorizontalAlignment="Right" VerticalAlignment="Top"
Margin="20" Padding="10" BorderBrush="Black" >
<StackPanel VerticalAlignment="Stretch">
<TextBlock Text="Layers in map service" FontWeight="Bold" />
<Grid ScrollViewer.VerticalScrollBarVisibility="Auto" >
<telerikNavigation:RadTreeView SelectionMode="Single" IsLineEnabled="True"
ItemsOptionListType="CheckList"
IsOptionElementsEnabled="True"
IsRootLinesEnabled="True"
x:Name="RadTreeView" IsTriStateMode="True" ItemTemplate="{StaticResource AlienTemplate}" >
</telerikNavigation:RadTreeView>
</Grid>
</StackPanel>
</Border>
</Grid>
BTW - I'm using RadControls_for_Silverlight_2009_3_1314 with SL 4
Thanks.
Oded