private static void OnSetCommandParameterCallback(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
{
ListBox lb = dependencyObject as ListBox;
if (lb != null)
{
ListBoxSelectionChangedCommandBehavior behavior = GetOrCreateBehavior(lb);
behavior.CommandParameter = e.NewValue;
}
}
private static ListBoxSelectionChangedCommandBehavior GetOrCreateBehavior(ListBox listBox)
{
ListBoxSelectionChangedCommandBehavior behavior =
listBox.GetValue(SelectCommandBehaviorProperty) as ListBoxSelectionChangedCommandBehavior;
if (behavior == null)
{
behavior = new ListBoxSelectionChangedCommandBehavior(listBox);
listBox.SetValue(SelectCommandBehaviorProperty, behavior);
}
return(behavior);
}