C#查找链表的节点

using System;
using System.Collections.Generic;

class Program {

   static void Main() {

      LinkedList<string> myList = new LinkedList<string>();

      // Add 6 elements in the linked list
      myList.AddLast(P);
      myList.AddLast(Q);
      myList.AddLast(R);
      myList.AddLast(S);
      myList.AddLast(T);
      myList.AddLast(U);

      LinkedListNode<string> node = myList.Find(R);
      myList.AddAfter(node, ADDED);

      foreach (var i in myList) {
         Console.WriteLine(i);
      }
   }
}