Get key list in a SortedList in CSharp

using System;/*from w  w w . j av a  2 s  .com*/
using System.Collections;

class MainClass
{

  public static void Main()
  {
    SortedList mySortedList = new SortedList();

    mySortedList.Add("NY", "New York");
    mySortedList.Add("FL", "Florida");
    mySortedList.Add("AL", "Alabama");
    mySortedList.Add("WY", "Wyoming");
    mySortedList.Add("CA", "California");


    IList myKeyList = mySortedList.GetKeyList();
    foreach(string myKey in myKeyList)
    {
      Console.WriteLine("myKey = " + myKey);
    }
  }
}