/// <summary>
/// Sets the value of the <see cref="Selector.IsSelectedProperty"/> dependency property
/// for every item in the selection collection.
/// </summary>
public void SetIsSelectedOnAllItems(Boolean isSelected)
{
for (var current = selections.First; current != null; current = current.Next)
{
Selector.SetIsSelected(current.Value.Container, isSelected);
}
}
