public static void SetItemsRulerLineVisiblity(TreeView treeView, RulerLineVisiblity value)
 {
     treeView.SetValue(ItemsRulerLineVisiblityProperty, value);
 }
 public static void SetRulerLineVisiblity(TreeViewItem treeViewItem, RulerLineVisiblity value)
 {
     treeViewItem.SetValue(RulerLineVisiblityProperty, value);
 }