private static void OnSetCommandParameterCallback(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
{
XamDataTree tree = dependencyObject as XamDataTree;
if (tree != null)
{
XamDataTreeNodeUnselectedCommandBehavior behavior = GetOrCreateBehavior(tree);
behavior.CommandParameter = e.NewValue;
}
}
private static XamDataTreeNodeUnselectedCommandBehavior GetOrCreateBehavior(XamDataTree tree)
{
XamDataTreeNodeUnselectedCommandBehavior behavior = tree.GetValue(DataItemUnselectedProperty) as XamDataTreeNodeUnselectedCommandBehavior;
if (behavior == null)
{
behavior = new XamDataTreeNodeUnselectedCommandBehavior(tree);
tree.SetValue(DataItemUnselectedProperty, behavior);
}
return(behavior);
}
