排序列表

    排序列表用SortedList对象表示，用Add()方法会自动将元素插入到适当的位置以保持关键字的顺序

/*
  Example11_8.cs illustrates the use of a SortedList
*/

using System;
using System.Collections;

class Example11_8
{

  public static void Main()
  {

    // create a SortedList object
    SortedList mySortedList = new SortedList();

    // add elements containing US state abbreviations and state
    // names to mySortedList using the Add() method
    mySortedList.Add("NY", "New York");
    mySortedList.Add("FL", "Florida");
    mySortedList.Add("AL", "Alabama");
    mySortedList.Add("WY", "Wyoming");
    mySortedList.Add("CA", "California");

    // get the state name value for "CA"
    string myState = (string) mySortedList["CA"];
    Console.WriteLine("myState = " + myState);

    // get the state name value at index 3 using the GetByIndex() method
    string anotherState = (string) mySortedList.GetByIndex(3);
    Console.WriteLine("anotherState = " + anotherState);

    // display the keys for mySortedList using the Keys property
    foreach (string myKey in mySortedList.Keys)
    {
      Console.WriteLine("myKey = " + myKey);
    }

    // display the values for mySortedList using the Values property
    foreach(string myValue in mySortedList.Values)
    {
      Console.WriteLine("myValue = " + myValue);
    }

  }

}