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Drag and drop of TreeView items inside RadDropDownButton

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Gert
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Gert asked on 22 Jun 2020, 07:02 AM

Hi,

I have a RadTreeView inside RadDropDownButton.DropDownContent.

What I want to achive is to reorder TreeView Items inside the dropdowncontent. I testet my behaviour having only a TreeView - this works. Now when I put the TreeView in the RadDropDownButton.DropDownContent, dragging does not work any more on the TreeView.

 

<telerik:RadDropDownButton
       Height="26"
       AutoOpenDelay="0:0:0.0"
       Content="Click"
       IsOpen="True">
       <telerik:RadDropDownButton.DropDownContent>
           <telerik:RadTreeView
               x:Name="xTreeView"
               Margin="8"                 
               IsDragDropEnabled="True"
               ItemTemplate="{StaticResource League}"
               ItemsSource="{Binding Source={StaticResource DataSource}, Path=LeagueObjects}" />
       </telerik:RadDropDownButton.DropDownContent>
   </telerik:RadDropDownButton>

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Dinko | Tech Support Engineer
Telerik team
answered on 25 Jun 2020, 06:44 AM

Hi Gert,

Thank you for the provided code snippet.

I was able to reproduce it. The problem comes from the fact that when the RadTreeView is placed inside the RadDropDownButton-DropDownContent, the items do not catch the drag operation. You can easily fix this by setting the telerik:DragDropManager.AllowCapturedDrag property. You can set it through implicit style.

<Window.Resources>
    <Style TargetType="telerik:RadTreeViewItem">
        <Setter Property="telerik:DragDropManager.AllowCapturedDrag" Value="True" />
    </Style>
</Window.Resources>

Regards,
Dinko
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Gert
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answered on 02 Jul 2020, 07:35 AM
That solved the issue, thanks a lot!
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Dinko | Tech Support Engineer
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Gert
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