Control template vs. Data Template

In the following Example, both Control Template and Data Template will fill ListBox using List Data. But Control Template disable ListBox Selection.

<Window.Resources>
<!--<Style TargetType="{x:Type ListBoxItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}"> <TextBlock Text="{Binding Path=Symbol}"></TextBlock> </ControlTemplate>
</Setter.Value>
</Setter>
</Style>-->
<ObjectDataProvider x:Key="Stocks" ObjectType="{x:Type data:Stocks}" />
<DataTemplate x:Key="ShowStock">
<TextBlock Text="{Binding Path=Symbol}">

</DataTemplate>
</Window.Resources>
<Grid Height="182" Width="240"> <Grid.RowDefinitions> <RowDefinition> <RowDefinition> </Grid.RowDefinitions>
<ListBox ItemsSource="{Binding Source={StaticResource Stocks}}" Name="StockList1" Grid.Row="0" ItemTemplate="{Binding Source={StaticResource ShowStock}}" />
<ListBox ItemsSource="{Binding Source={StaticResource Stocks}}" Name="StockList2" Grid.Row="1" />
</Grid>