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wmlanza
260
Drag and Drop multiple items FROM Listbox
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I am interested in being able to drag multiple items from a SL Listbox to a xamDataTree using the DragDropManager.  Is that possible? Even though I have my listbox set to SelectionMode="Extended", when I start dragging the DragDropStartEventArgs Data property is set to only one of the selected items. I have seen other posts about dragging multiple XamGridRows, but none of them seem to apply to a ListBox. Any help would be appreciated.

<ListBox x:Name="lbFilteredContacts"
             ItemsSource="{Binding FilteredContacts}"
             SelectionMode="Extended"
             MaxHeight="300"
             MinWidth="300"
             Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="1" Margin="5"
             Visibility="{Binding ContactListVisible}">
         <ListBox.ItemTemplate>
              <DataTemplate>
                   <StackPanel Orientation="Horizontal">
                       <Image Source="{Binding image}" Height="16" Width="16" Margin="5"/>
                        <TextBlock Text="{Binding fullName}" Margin="5"/>
                        <ig:DragDropManager.DragSource>
                            <ig:DragSource x:Name="dsListBox" 
                                 IsDraggable="True"
                                 Drop="dsListBox_Drop"
                                 DataObject="{Binding}"
                                 DragStart="dsListBox_DragStart"/>
                            </ig:DragDropManager.DragSource>
                      </StackPanel>
                   </DataTemplate>
                </ListBox.ItemTemplate>
             </ListBox>
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  • 138253
    Verified Answer
    Offline posted

    Hello,

     

    Thank you for your post. I have been looking into it and I created a sample project for you with the functionality you want. Basically in the DragStart event handler I set the Drag’s Data to be the SelectedItems, and also create a DataTemplate for the DragTemplate, so I can show all the selected Items. Please let me know if this helps you or you need further assistance on this matter.

     

    Looking forward for your reply.

    DragDropMultipleItems.zip
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