Hi,
I'm trying to use this control, but I'm finding many problems and lose much time because I do not understand what is working and what is not.
I'm trying to run these events need to manage running some limitation that I want to impose on any of these items dynamically but it seems that events need not work.
It 'possible that these events are not implemented?

PreviewDragEnter
PreviewDragLeave
DragEnter
DragLeave

Thanks Marcello

        <DataTemplate x:Key="MiaSubCategoria">
            <StackPanel Orientation="Horizontal">
                   <TextBlock Text="{Binding Nome}"/>
            </StackPanel>
        </DataTemplate>
        
       <HierarchicalDataTemplate x:Key="MiaCategoria"
                                 ItemTemplate="{StaticResource MiaSubCategoria}"
                                 ItemsSource="{Binding SubCategorie}">
            <StackPanel Orientation="Horizontal">
                <TextBlock Text="{Binding Nome}"/>
            </StackPanel>
        </HierarchicalDataTemplate>

 
SET TREEVIEW:

      <telerikNavigation:RadTreeView Canvas.Left="62" Canvas.Top="25" Height="137" Name="RadTreeView1" Width="486"  IsSingleExpandPath="True" TextDropAfter="Dopo" TextDropBefore="Prima" TextDropIn="In mezzo a" AllowDrop="True" IsDragDropEnabled="True" HorizontalContentAlignment="Stretch" IsExpandOnDblClickEnabled="False" IsExpandOnSingleClickEnabled="True" ItemTemplate="{StaticResource MiaCategoria}"/>


VB CODE FOR POPULATING TREE

Dim miacollez As ObservableCollection(Of Categorie)

miacollez =

New ObservableCollection(Of Categorie)(MyEDM.Categorie.Include("SubCategorie"))

Me.RadTreeView1.ItemsSource = miacollez

Hi, I need clarification on how to handle correctly the label called DragTooltipText because I can not set the field name but I associate the name of dataobject (look image in attach). I tried with the styles but does not work .. I can only change colors but the content changes runtime clearly as I do?

Thanks for your cooperation

Marcello

PS: Sorry for my english

GroupBox Header="Available Parts" DockPanel.Dock="Left">

<telerik:RadGridView Name="AvailablePartsGrid"

Width="390"

UseAlternateRowStyle="True"

AutoGenerateColumns="False"

MultipleSelect="True"

ColumnsWidthMode="None"

ShowGroupPanel="False"

CanUserResizeColumns="False"

CanUserFreezeColumns="False"

FrozenColumnCount="1"

ItemsSource="{Binding AvailableParts}"

local:RadGridViewExtension.SelectedItemsSource="{Binding AvailableSelectedItems,Mode=TwoWay}">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataType="{x:Null}" IsReadOnly="True" IsVisible="True" IsFilterable="False" IsGroupable="False" IsSortable="True" MinWidth="60" UniqueName="PartNumber" Header="Part #" />

<telerik:GridViewDataColumn DataType="{x:Null}" IsReadOnly="True" IsVisible="True" IsGroupable="True" IsSortable="True" UniqueName="Description" MinWidth="300" Header="Description"/>

</telerik:RadGridView.Columns>

<telerik:RadGridView.SortDescriptors>

<telerik:SortDescriptor Member="PartNumber" SortDirection="Descending" />

</telerik:RadGridView.SortDescriptors>

</telerik:RadGridView>

</GroupBox>

The problem is it shows the horizontal scroll bar with the desired width and at extreme left for the very first time but once the bar is moved and the source is updated, the scrollbar remains there rather than going to the extreme left (its default position), and its size also is not recalculated.