/// <summary>/// 向上遞歸，獲取符合條件的父節點/// </summary>/// <param name="node">需要向上遞歸的節點</param>/// <param name="conditionHanlder">判斷條件【委托】</param>/// <returns>符合條件的節點【TreeListNode】</returns>public static TreeListNode GetParentNode(this TreeListNode node, Predicate<TreeListNode> conditionHanlder){  TreeListNode _parentNode = node.ParentNode;//獲取上一級父節點  TreeListNode _conditonNode = null;  if (_parentNode != null)  { if (conditionHanlder(_parentNode))//判斷上一級父節點是否符合要求 {   _conditonNode = _parentNode; } if (_conditonNode == null)//若沒有找到符合要求的節點，遞歸繼續   _conditonNode = GetParentNode(_parentNode, conditionHanlder);  }  return _conditonNode;}/// <summary>/// 向上遞歸節點/// </summary>/// <param name="node">需要向上遞歸的節點</param>/// <param name="conditionHanlder">委托，返回fasle跳出遞歸；返回true繼續遞歸；</param>public static void UpwardRecursiveNode(this TreeListNode node, Predicate<TreeListNode> conditionHanlder){  TreeListNode _parentNode = node.ParentNode;  if (_parentNode != null)  { if (conditionHanlder(_parentNode)) {   UpwardRecursiveNode(_parentNode, conditionHanlder); }  }}/// <summary>/// 向上遞歸，獲取符合條件的節點的公共父節點/// </summary>/// <param name="node">操作節點</param>/// <param name="checkHanlder">委托</param>/// <returns>符合條件的節點</returns>public static TreeListNode GetPublicParentNode(this TreeListNode node, Predicate<TreeListNode> checkHanlder){  TreeListNode _publicPNode = null;  TreeListNode _findNode = node.GetParentNode(checkHanlder);//先獲取到條件判斷的自身父節點  if (_findNode != null)  { //開始向上遞歸 UpwardRecursiveNode(_findNode, n => {   TreeListNode _curpublicNode = n.ParentNode;//獲取當前向上遞歸的父節點   if (_curpublicNode != null)   { if (_curpublicNode.Nodes.Count > 1)//若有多個子節點，則是公共父節點 {   _publicPNode = _curpublicNode;   return false;//跳出遞歸 }   }   return true;//繼續遞歸 });  }  return _publicPNode;}