WPF

public interface IBaseView{}
public interface IShowAsTree:IBaseView{}
public interface IShowAsTabs:IBaseView{}
public interface IShowAsGroupBoxes:IBaseView{}

public class DataCollection:BaseVM, IShowAsTree, IShowAsTabs, IShowAsGroupBoxes
{
    //extended data class
}

public class ExtenededDataView:BaseVM
{
    public String[] ViewAsOptions{get{return new[] {"Tree","Tabs","GroupBoxes"}}

    private String _viewAs;
    public String ViewAs
    {
        get {return _viewAs;}
        set
        {
            _viewAs = value;
            OnPropertyChanged(()=>View);
        }
    }
    private DataCollection _view;
    public IBaseView View
    {
        get
        {
            switch(ViewAs)
            {
                case "Tree":
                return _view as IShowTabs;
                break;
                //...
            }
        }
    }
}

public class SwitchMyUI
    {
        public DataCollection Details { get; set; }

        public SwitchMyUI(DataCollection details)
        {
            Details = details;
        }

        public SwitchMyUI(SwitchMyUI copyFrom)
        {
            Details = copyFrom.Details;
        }
    }

    public class ShowTabs : SwitchMyUI
    {
        public ShowTabs(SwitchMyUI copyFrom) : base(copyFrom)
        {
        }
    }

    public class ShowTree : SwitchMyUI
    {
        public ShowTree(SwitchMyUI copyFrom) : base(copyFrom)
        {
        }
    }

<ListBox x:Name="Contacts"           
            ScrollViewer.VerticalScrollBarVisibility="Auto"
            ItemsSource="{Binding Contacts}"
            SelectedItem="{Binding SelectedContact}">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <Border CornerRadius="3"
                    Height="200"
                    Width="300"
                    Padding="5"
                    Margin="8"
                    Background="White"
                    BorderBrush="DarkGray"
                    BorderThickness="1">
                <Border.Effect>
                    <DropShadowEffect Color="DarkGray"
                            ShadowDepth="7"/>
                </Border.Effect>
                <Border Margin="2"
                        CornerRadius="3"
                        Padding="4"
                        BorderBrush="LightSteelBlue"
                        BorderThickness="1">
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="*"/>
                        </Grid.RowDefinitions>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="Auto"/>
                            <ColumnDefinition Width="Auto"/>
                            <ColumnDefinition Width="Auto"/>
                        </Grid.ColumnDefinitions>
                        <Image Height="45"
                                Width="45" Source="/Falcon.UI.WPF;component/Media/Images/customer_48.png"
                                Grid.Row="0"
                                Grid.Column="0"/>
                        <StackPanel Orientation="Horizontal"
                                    Grid.Row="0"
                                    Grid.Column="1">
                                    
                            <TextBlock Style="{Binding PageHeaderLabelStyle}"
                                        FontSize="28"
                                        Foreground="#2B579A"
                                        Text="{Binding FirstName}"/>
                            <TextBlock Style="{Binding PageHeaderLabelStyle}"
                                        FontSize="28"
                                        Foreground="#2B579A"
                                        Margin="5,0,0,0"
                                        Text="{Binding LastName}"/>
                        </StackPanel>
                        <TextBlock Grid.Row="1"
                                    Grid.Column="1"
                                    Style="{Binding PageHeaderLabelStyle}"
                                    FontSize="18"
                                    Foreground="#2B579A"
                                    Margin="0,-10,0,0"
                                    Text="{Binding Title}"/>
                                
                    </Grid>
                </Border>
            </Border>

        </DataTemplate>
    </ListBox.ItemTemplate>
            
</ListBox>

<ControlTemplate TargetType="{x:Type GroupItem}" x:Key="SceneGroupItemTemplate" >
    <Expander IsExpanded="True"  >
        <Expander.Header >
            <Border Background="LightSteelBlue" 
                    BorderBrush="SteelBlue" 
                    BorderThickness="1" 
                    HorizontalAlignment="Stretch">
                <TextBlock FontSize="14" 
                           FontWeight="Bold" 
                           Margin="5,0,10,0" 
                           Width="{Binding RelativeSource={RelativeSource Mode=FindAncestor, 
                                                           AncestorType={x:Type Expander}}, Path=ActualWidth}" >
                    <TextBlock Text="{Binding Path=Name}" />
                    <Grid Width="10"/>
                        (
                        <TextBlock Text="{Binding Path=ItemCount}" /> 
                        items)
                </TextBlock>
            </Border>
        </Expander.Header>
        <Expander.Content>
            <ItemsPresenter />
        </Expander.Content>
    </Expander>
</ControlTemplate>

<ListView x:Name="datagridScenes" SelectionMode="Single"  >
    <ListView.GroupStyle >
        <GroupStyle HidesIfEmpty="False" >
            <GroupStyle.ContainerStyle >

                <!-- If I comment out this element, I loose the grouping, but the comboboxes work -->
                <Style TargetType="{x:Type GroupItem}" >
                    <Setter Property="Template" Value="{StaticResource SceneGroupItemTemplate}" />
                </Style>

            </GroupStyle.ContainerStyle>
        </GroupStyle>
    </ListView.GroupStyle>
</ListView>