using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication2 {
    public enum Color {
        red,
        white,
        blue
    }

    class Program {
        static void Main(string[] args) {
            string toString, fromString = "red";
            int toInt, fromInt = 1;
            Color toColor, fromColor = Color.blue;

            //    string to enum
            toColor = (Color) Enum.Parse(typeof(Color), fromString);

            //    string to int
            toInt = (int) (Color) Enum.Parse(typeof(Color), fromString);

            //    int to enum
            toColor = (Color) fromInt;

            //    int to string
            toString = ((Color) fromInt).ToString();

            //    enum to string
            toString = fromColor.ToString();

            //    enum to int
            toInt = (int) fromColor;

            Console.ReadLine();
        }
    }
}