TreeView

[RR]

I have a treeView using an ItemTemplate
<ScrollViewer HorizontalScrollBarVisibility="Auto"
              VerticalScrollBarVisibility="Auto" BorderThickness="0">
                             <navi:RadTreeView x:Name="rdtreeCheckLists"
                                   SelectedItem="{Binding SelectedOrgCheckList, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                                   HorizontalContentAlignment="Left"
                                   ItemsSource="{Binding CheckListWithItems, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                                   ItemTemplate="{StaticResource CheckListTemplate}"
                                   SelectionChanged="rdtreeCheckLists_SelectionChanged"
                                   SelectionMode="Single"
                                   IsDragDropEnabled="True">
                             </navi:RadTreeView>
                         </ScrollViewer>

Item template is like this

<telerik:HierarchicalDataTemplate x:Key="CheckListTemplate" ItemsSource="{Binding SubItems,Mode=TwoWay}">
            <StackPanel Orientation="Horizontal">
                <Image Source="../Images/add_to_group.jpg" Width="15" Height="15"></Image>
                <TextBox Text="{Binding Name,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                         BorderThickness="0" BorderBrush="Transparent"
                         IsReadOnly="{Binding  RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=UserControl},
                         Path=DataContext.IsReadOnly,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>
                        <telerik:RadRibbonButton
                            SmallImage="../Images/icon_delete_normal.png"
                            HorizontalAlignment="Right" Click="CheckListDelete_Click"
                            IsEnabled="True"
                            Width="Auto" Height="17"  CommandParameter="{Binding Id, Mode=TwoWay}"  CommandTarget="{Binding Type, Mode=TwoWay}" />
            </StackPanel>
        </telerik:HierarchicalDataTemplate>

I have binded a HierarchicalDataModel "CheckListWithItems" which has SubItems property. 

The problem is in DragDrop Items into tree view. When i drop item into tree view the latter version it doesn't show dropped item as child. Even when i add it in code it shows only most upper level items. 

The problem is in Telerik.Windows.Control RuntimeVersion v4.0.30319 / Version 2014.3.1202.1050 this WORKS. but NOT in  RuntimeVersion v4.0.30319 / Version 2015.3.1104.1050

I have the same code only with replaced dlls. 

How to resolve this?

Thank you in advance

[Martin Ivanov]

Hi Roshan,

I tested your code but I wasn't able to reproduce the described behavior. Can you please take a look at the attached project and let me know if I am missing something?

Regards,
Martin
Telerik