using System;

using System.Collections.ObjectModel;

​

public class Program

{

    public static void Main()

    {

            TakingAnEnumeratedValueAsAParameter(SkillTypes.EntryLevel);

            TakingAnEnumeratedValueAsAParameter(SkillTypes.Intermediate);

            TakingAnEnumeratedValueAsAParameter(SkillTypes.Advanced);

            Console.WriteLine();

            foreach (SkillType skill in SkillTypes.All)

            {

                string meetsExpectations = skill.MeetsExpectations(SkillTypes.Intermediate) ? "meets" : "doesn't meet";

                Console.WriteLine($"{skill} {meetsExpectations} {SkillTypes.Intermediate} expectations.");

            }

    }

    /* enumerated parameter */

    public static void TakingAnEnumeratedValueAsAParameter(SkillType skill)

    {

        Console.WriteLine($"{skill} skill processed.", skill);

    }

    /* Type for holding enumerated values as objects */

    public class SkillType

    {

        public string Name { get; init; }

​

        public string Code { get; init; }

        /* encapsulated attributes and behavior */

        public int Trustworthiness { get; init; } = 0;

        public bool MeetsExpectations(SkillType skill)

        {

            return this.Trustworthiness >= skill.Trustworthiness;

        }

​

        public override string ToString()

        {

            return Name; 

        }

    }

​

    /* Container of instances of enumerated values */

    public static class SkillTypes

    {

        /* "Enumerated" SkillType values */

        public static readonly SkillType EntryLevel = new SkillType { Name = "Entry Level", Code = "ENT", Trustworthiness = 1 };

        public static readonly SkillType Intermediate = new SkillType { Name = "Intermediate", Code = "INT", Trustworthiness = 5 };

        public static readonly SkillType Advanced = new SkillType { Name = "Advanced", Code = "ADV", Trustworthiness = 10};

        /* Complete list of all valid skill types, as you might get with System.Enum.GetValues() */

        public static readonly ReadOnlyCollection<SkillType> All = new ReadOnlyCollection<SkillType>(new [] { EntryLevel, Intermediate, Advanced });

    }

​

    /* A demonstration of an object that has an enumerated property */

    public class Employee

    {

        /* referencing an enumerated value */

        public SkillType Skill { get; set; } = SkillTypes.EntryLevel;

    }

}