WPF listbox empty datatemplate

I've had some success with this code:

<Style TargetType="ListBox" x:Key="ListStyle" BasedOn="{StaticResource {x:Type ListBox}}">    <Style.Triggers>        <DataTrigger             Binding="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=Items.Count}"             Value="0"            >            <Setter Property="Template">                <Setter.Value>                    <ControlTemplate>                        <TextBlock>No items to display</TextBlock>                    </ControlTemplate>                </Setter.Value>            </Setter>        </DataTrigger>    </Style.Triggers></Style>

Based on @Matt Hamilton's accepted answer, for reference, I created a variation which does not require the binding, as it uses the HasItems property of the ListBox to trigger the empty template:

<ListBox.Style>    <Style x:Key="EmptyListStyle"           TargetType="ListBox"           BasedOn="{StaticResource {x:Type ListBox}}">        <Style.Triggers>            <!-- Use ListBox.HasItems instead of Binding -->            <Trigger Property="HasItems" Value="False">                <Setter Property="Template">                    <Setter.Value>                        <ControlTemplate>                            <TextBlock>No items to display</TextBlock>                        </ControlTemplate>                    </Setter.Value>                </Setter>            </Trigger>        </Style.Triggers>    </Style></ListBox.Style>

This allows the style to be used globally, without having to know the property name to which the list binds. I found it useful when binding to a CollectionViewSource defined in XAML.

I'm not aware of any drawbacks of this method, comments welcome if you should find any.