using System;

using System.Linq;

using System.Dynamic;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        dynamic hashmap = new ExpandoObject();

        hashmap.value1 = 123;

        hashmap.value2 = 321;

        var hashDic = (IDictionary<string, object>)hashmap;

        hashDic["value3"] = 321; // this isn't supported in c# i don't think..(?)

        string prefix = "This is a Prefix: ";

        var man = new Action<string>(param => Console.WriteLine(prefix + param));

        foreach (var kvp in hashDic)

            man(kvp.Key + " - " + kvp.Value);

    }

}