using System;  

using System.Collections.Generic;  

public class DictionaryExample  

{  

    public static void Main(string[] args)  

    {  

        SortedDictionary<string, string> names = new SortedDictionary<string, string>();  

        names.Add("3","Sonoo");  

        names.Add("1","Peter");  

        names.Add("2","James");  

        names.Add("4","Ratan");  

        names.Add("5","Irfan");  

        Console.WriteLine(names["3"]);

        foreach (KeyValuePair<string, string> kv in names)  

        {  

            Console.WriteLine(kv.Key+" "+kv.Value);  

        }  

    }  

}