How can a separator be added between items in an ItemsControl

Question

I'm needing to display a list of numbers from a collection in an Items Control. So the items are: "1", "2", "3".

When they are rendered, I need them separated by a comma (or something similar). So the above 3 items would look like this: "1, 2, 3".

How can I add a separator to the individual items, without having one tacked on the end of the list?

I am not stuck on using an ItemsControl, but that's what I had started to use.

Answer 1

<ItemsControl ItemsSource="{Binding Numbers}">     <ItemsControl.ItemsPanel>         <ItemsPanelTemplate>             <!-- could use a WrapPanel if more appropriate for your scenario -->             <StackPanel Orientation="Horizontal"/>         </ItemsPanelTemplate>     </ItemsControl.ItemsPanel>     <ItemsControl.ItemTemplate>         <DataTemplate>             <StackPanel Orientation="Horizontal">                 <TextBlock x:Name="commaTextBlock" Text=", "/>                 <TextBlock Text="{Binding .}"/>             </StackPanel>             <DataTemplate.Triggers>                 <DataTrigger Binding="{Binding RelativeSource={RelativeSource PreviousData}}" Value="{x:Null}">                     <Setter Property="Visibility" TargetName="commaTextBlock" Value="Collapsed"/>                 </DataTrigger>             </DataTemplate.Triggers>         </DataTemplate>      </ItemsControl.ItemTemplate> </ItemsControl> 

I arrived at your question because I was looking for a solution in Silverlight, which does not have a previous data relative source.