using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        SortedList<string,int> sortedList = new SortedList<string,int>();

        sortedList.Add("one", 1);

        sortedList.Add("two", 2);

        sortedList.Add("three", 3);

        sortedList.Add("four", 4);

        sortedList.Add("five", 5);

        var result =  sortedList.Where(kvp => kvp.Key == "two").FirstOrDefault();

        Console.WriteLine("key: {0}, value: {1}", result.Key, result.Value);

    }

}