Get or set the value associated with the specified key in CSharp

using System;/*from ww  w  .  j  a va 2  s. c  o  m*/
using System.Collections;
using System.Collections.Specialized;

public class SamplesListDictionary  {
   public static void Main()  {
      ListDictionary myCol = new ListDictionary();
      myCol.Add( "F", "1.49" );
      myCol.Add( "A", "1.29" );
      myCol.Add( "B", "1.49" );
      myCol.Add( "C", "1.29" );
      myCol.Add( "D", "0.89" );
      myCol.Add( "E", "0.99" );

      Console.WriteLine(myCol[1]);
      
      myCol[1] = "new";
      
      Console.WriteLine(myCol[1]);
   }
}