Add new node at the start of LinkedList in CSharp

using System;/* ww  w  .j  av  a  2  s .  co m*/
using System.Collections;
using System.Collections.Generic;

public class GenericCollection  
{
   public static void Main()  
   {
      LinkedList<String> ll = new LinkedList<String>();
      ll.AddLast( "A" );
      ll.AddLast( "B" );
      ll.AddLast( "C" );
      ll.AddLast( "java2s.com" );

      foreach(string s in ll){
          Console.WriteLine(s);
      }
      
      ll.AddFirst(ll.First );

      foreach(string s in ll){
          Console.WriteLine(s);
      }
   }
}