using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        Dictionary<string, int> people = new Dictionary<string, int>();

​

        people.Add("John Doe", 23);

        people["John Foe"] = 27;  

        // Variant 1

        var enumerator = people.GetEnumerator();

        enumerator.MoveNext();

        Console.WriteLine(enumerator.Current);

        // Variant 2

        foreach( var person in people ) 

        {

            Console.WriteLine(person);

            break;

        }

    }

}