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Drag And Drop into a list nested in a listview

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Patrick Emmisberger
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Patrick Emmisberger asked on 30 Apr 2010, 05:16 PM
I've a window with a listbox on the left half and a listview on the right half. The DataTemplate of the listview is set to a template which contains a listbox, so for every row of the listview a new listbox is created. Now I want to drag an item from the left half of the window into one of the nested listboxes on the right half. The problem is, that the nested listboxes aren't registered as drop target zones, although the AllowDrop-prop is set to true. If I set the AllowDrop-Property of the listview to true, the DropQuery-Event is raised, but the e.Options.Destination is always the listview, not the listbox inside it.

Any help is appreciated.



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Tina Stancheva
Telerik team
answered on 05 May 2010, 07:32 PM
Hello Patrick Emmisberger,

Can you try setting a ItemContainerStyle for the ListView, like so:
<DataTemplate x:Key="Template">
    <ListBox >
        <ListBoxItem Content="{Binding Name}"/>
<Style TargetType="ListViewItem" x:Key="Style">
    <Setter Property="telerikDragDrop:RadDragAndDropManager.AllowDrop" Value="True"/>
<ListView ItemContainerStyle="{StaticResource Style}" ItemTemplate="{StaticResource Template}" x:Name="listView" />

This way in the DropInfo and DropQuery events the e.Options.Destination will point to the TreeViewItem.

Give it a try and let me know how it goes.

Best wishes,
Tina Stancheva
the Telerik team

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Patrick Emmisberger
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Answers by
Tina Stancheva
Telerik team
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