using System;

public class Program

{

    public enum MySuperEnum { One, Two, Three }

    public static void Main()

    {

        var mySuperEnumValue = (MySuperEnum)42;

        var isDefined = System.Enum.IsDefined(typeof(MySuperEnum), mySuperEnumValue);

        Console.WriteLine($"{mySuperEnumValue.ToString()}, isDefined={isDefined}");

        mySuperEnumValue = MySuperEnum.One;

        isDefined = System.Enum.IsDefined(typeof(MySuperEnum), mySuperEnumValue);

        Console.WriteLine($"{mySuperEnumValue.ToString()}, isDefined={isDefined}");

    }

}