find the kth smallest key in a map in csharp

main.cs
using System;
using System.Collections.Generic;
using System.Linq;

class Program {
    static void Main(string[] args) {
        // sample map
        var map = new Dictionary<string, int>() {
            {"Alice", 25},
            {"Bob", 30},
            {"Charlie", 20},
            {"Dave", 35},
            {"Eve", 28},
        };

        int k = 3; // find the 3rd smallest key

        // sort the keys and return the kth element
        var kthKey = map.Keys.OrderBy(key => key).ElementAt(k-1);

        Console.WriteLine(kthKey); // outputs "Charlie"
    }
}
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