Silverlight ListBox and the ItemContainerStyle

Stretching out the Listbox content.
 
In order to get the content of my Listbox ItemTemplate to fill out the entire width of the Listbox control, I simply needed to add an ItemContainerStyle as follows:
 

<UserControl.Resources>

    <Style x:Key="ListBoxItemStyle1" TargetType="ListBoxItem">

        <Setter Property="HorizontalContentAlignment" Value="Stretch"/>

        <Setter Property="HorizontalAlignment" Value="Stretch"/>

    </Style>

</UserControl.Resources>

 
The solution came from here…

Silverlight 3 DataTriggers

Using DataTriggers to control Storyboard actions.
 
More details are available here…

External and Local Resources in App.xaml

The property ‘Resource’ is set more than once.
 
Working on my Silverlight application that contained local and external resources I was getting the error (above) in the App.xaml file. The error was displayed even thought the build was successful and my application ran. I found the solution to my problem here.