在DataTemplate中仅显示列表中的最后一项

<ListBox ItemsSource="{Binding YourDataCollection}">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <Grid>
                <!-- 根据需要展示的数据绑定到UI元素 -->
                <TextBlock Text="{Binding YourProperty}" />
            </Grid>
            <DataTemplate.Triggers>
                <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem}}}" Value="{Binding YourDataCollection[YourDataCollection.Count-1]}">
                    <Setter Property="Visibility" Value="Visible" />
                </DataTrigger>
                <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem}}}" Value="{Binding YourDataCollection[YourDataCollection.Count-1], Converter={StaticResource LastItemConverter}}">
                    <Setter Property="Visibility" Value="Visible" />
                </DataTrigger>
                <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem}}}" Value="{Binding YourLastItemProperty}">
                    <Setter Property="Visibility" Value="Visible" />
                </DataTrigger>
                <Setter Property="Visibility" Value="Collapsed" />
            </DataTemplate.Triggers>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>