using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(ONOFF.On.Text());

        Console.WriteLine("Off".ToONOFF());

    }

}

​

public enum ONOFF

{

    On = 1,

    Off = 2

}

​

public static partial class Extensions

{

    public static string Text(this ONOFF onOff)

    {

        return onOff.ToString();

    }

​

    public static ONOFF ToONOFF(this string onOff)

    {

        ONOFF result = default(ONOFF);

        Enum.TryParse(onOff, out result);

        return result;

    }

}