DragDropFriendlyListBox.cs

public class DragDropFriendlyListBox : ListBox
{
    /// <summary>
    /// Gets the container for item override.
    /// </summary>
    /// <returns>The DragDropFriendlyListBoxItem container.</returns>
    protected override DependencyObject GetContainerForItemOverride()
    {
        return new DragDropFriendlyListBoxItem();
    }
}