using System.Collections.Generic;
public static void Main()
SortedList<int,string> srt = new SortedList<int,string>();
var query = from kvp in srt
var result = query.FirstOrDefault();
Console.WriteLine("Key: {0}, Value: {1}", result.Key,result.Value);
var result1 = srt.Where(kvp1=>kvp1.Key == 2).FirstOrDefault();
Console.WriteLine("Key: {0}, Value: {1}", result1.Key,result1.Value);