ItemsControl Drag and Drop

Question

I have an ItemsControl with a DataTemplate that is bound to an ObservableCollection of integers.

<ItemsControl Name="DimsContainer" ItemTemplate="{StaticResource DimensionsTemplate}">
    <ItemsControl.ItemsPanel>
        <ItemsPanelTemplate>
            <StackPanel Orientation="Horizontal"/>
        </ItemsPanelTemplate>
   </ItemsControl.ItemsPanel>
</ItemsControl>

And in the Windows Resources:

<Window.Resources>
    <DataTemplate x:Key="DimensionsTemplate" >
        <TextBlock Text="{Binding}"
                       Padding="5"
                       VerticalAlignment="Center"
                       FontSize="32"/>
    </DataTemplate>
</Window.Resources>

I'm trying to implement the ability to drag and drop items within the ItemsControl (i.e. to be able to reorder the integers). Does anyone have a simple example of how to do this? I hooked up the PreviewMouseMove, DragEnter and Drop events. The problem is that I can't figure out how to determine which item is being dragged and where it is dragged to. It seems that the entire ItemsControl gets passed into the events.

Answer 1

For a complete sample, look here. Bea Costa is your friend when it comes to all things related to ItemsControls and DragDropping :).