using System;

​

public class Program

{

  public static void Main()

  {

    var start = new Node();

    var current = start;

​

    for (int i = 1; i < 10; i++)

    { 

      current.Value = i;

​

      current.Next = new Node();

​

      current = current.Next;

    }

​

    current = start;

​

    while (current != null)

    {

      Console.WriteLine("current: {0}; next: {1}", current.Value, (current.Next != null ? current.Next.Value : -1));

      current = current.Next;

    }

​

  }

​

}

​

public class Node

{

​

  public int Value { get; set; }

​

  public Node Next { get; set; }

​

}