Silverlight: Datagrid like grouping in ItemsControl

Is it possible to group items in a ItemsControl or Listbox in Silverlight? These controls are bound to a DomainDataSource.

Or are there any 3rd party controls that do this?

UPDATE:

This is the sort of UI I am 开发者_运维问答trying to create.

You can do this by using nested ItemsControls bound to a PagedCollectionView.

Say I have a datasource - MyItems - with fields: Category, Section and Option. I can create a PagedCollectionView from an IEnumerable(of MyItems) and tell it which fields to group by.

Dim original As IEnumerable(Of MyItems) = GetMyItems()

Dim pcv = New PagedCollectionView(original)

pcv.GroupDescriptions.Add(New PropertyGroupDescription("Category"))
pcv.GroupDescriptions.Add(New PropertyGroupDescription("Section"))

Then I bind my first ItemsControl to the PagedCollectionView

hisMyItems.ItemsSource = pcv.Groups

The PCV creates a nested hierachy like:

-Name
    -Items

where Name is the value in the grouped field and Items contains the rows/objects in that grouping. I guess you could also create the PCV in xaml if you prefer.

The xaml would look something like:

<controls:HeaderedItemsControl x:Name="hisMyItems" Header="{Binding Name}" ItemsSource="{Binding Items}" >
    <controls:HeaderedItemsControl.ItemTemplate>
        <DataTemplate>

            <controls:HeaderedItemsControl Header="{Binding Name}" ItemsSource="{Binding Items}" ItemsPanel="{StaticResource ItemsPanelTemplate1}" >
                <controls:HeaderedItemsControl.ItemTemplate>
                    <DataTemplate>
                        <Button Content="{Binding Option}" />
                    </DataTemplate>
                </controls:HeaderedItemsControl.ItemTemplate>
            </controls:HeaderedItemsControl>

        </DataTemplate>
    </controls:HeaderedItemsControl.ItemTemplate>
</controls:HeaderedItemsControl>

I hope that makes sense. I have tried to simplify things from my actual app but I could have made some mistakes in copying it over. Obviously you could use normal ItemsControls or other controls too and customize with templates etc.

The DataGrid control supports grouping.

Tim Heuer has a good blog on grouping with a datagrid. link text

Perhaps the control you are really looking for is the Accordian Control from the Toolkit.

See sample of Accordian behaviour here.

Note that the actual appearance is as style-able as any other control. The basic function is to group categories of items that would otherwise be a straight-forward List.