private static SelectedItemsBehavior GetOrCreateBehavior(ListBox target, IList list)
{
var behavior = target.GetValue(SelectedItemsBehaviorProperty) as SelectedItemsBehavior;
if (behavior == null)
{
behavior = new SelectedItemsBehavior(target, list);
target.SetValue(SelectedItemsBehaviorProperty, behavior);
}
else
{
behavior.SetNewList(list);
}
return behavior;
}
public static void SetItems(ListBox listBox, IList list)
{
listBox.SetValue(ItemsProperty, list);
}