using System;

using System.Linq;

using System.Collections.Generic;

​

    public static class Extensions

    {

        public static Dictionary<string, int> ToDictionary(this Type source)

        {

            if(!source.IsEnum){

                throw new ArgumentException("Type must be an enumeration.");    

            }

            return Enum.GetValues(source).Cast<int>().ToDictionary(value => Enum.GetName(source, value));

        }

    }

​

    public enum Test

    {

        One,

        Two

    }

​

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine(typeof(Test).ToDictionary());     

    }

}