using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        //var version = (MsdVersion)1;

        var version = MsdVersion.V2;

        //var version = MsdVersion.V3;

        var supportedTypes = GetSupportedVehicleTypes(version);

        Console.WriteLine("supported types in " + version + ": " + string.Join(", ", supportedTypes));

        var serializer = MsdVehicleTypeSerializerFactory.GetSerializer(version);

        var serialization = supportedTypes.ToDictionary(t => t, t => serializer.Serialize(t));

        foreach (var kvp in serialization)

        {

            Console.WriteLine(kvp.Key + ": " + kvp.Value);

        }

    }

    // enums

    private enum MsdVersion

    {

        V2 = 2,

        V3

    }

​

    private enum MsdVehicleType

    {

        [SupportsMsdVersion(MsdVersion.V2)]

        [SupportsMsdVersion(MsdVersion.V3)]

        Truck,

​

        [SupportsMsdVersion(MsdVersion.V2)]

        Trailer

    }

​

    // attribute

    [AttributeUsage(AttributeTargets.Field, AllowMultiple = true)]

    private class SupportsMsdVersionAttribute : Attribute

    {

        public SupportsMsdVersionAttribute(MsdVersion version)

        {

            Version = version;

        }

​

        public MsdVersion Version { get; }

    }

​

// get values to display in combobox

    private static IEnumerable<MsdVehicleType> GetSupportedVehicleTypes(MsdVersion filter)

    {

        return Enum.GetValues<MsdVehicleType>()

            .Where(vt => typeof(MsdVehicleType)

                .GetMember(vt.ToString()).First()

                .GetCustomAttributes(typeof(SupportsMsdVersionAttribute), false)

                .Any(a => ((SupportsMsdVersionAttribute)a).Version == filter));

    }

​

    // get values for serialization

    private interface IMsdVehicleTypeSerializer

    {

      string Serialize(MsdVehicleType vehicleType);

    }

​

    private class MsdVehicleTypeSerializerV2 : IMsdVehicleTypeSerializer

    {

        public string Serialize(MsdVehicleType vehicleType) => vehicleType.ToString() + "_V2";

    }

​

    private class MsdVehicleTypeSerializerV3 : IMsdVehicleTypeSerializer

    {

        public string Serialize(MsdVehicleType vehicleType) => vehicleType.ToString() + "_V3";

    }

​

    private class MsdVehicleTypeSerializerFactory

    {

        public static IMsdVehicleTypeSerializer GetSerializer(MsdVersion version)

        {

            switch (version)

            {

                case MsdVersion.V2:

                    return new MsdVehicleTypeSerializerV2();

                case MsdVersion.V3:

                    return new MsdVehicleTypeSerializerV3();

                default:

                    throw new ArgumentOutOfRangeException(nameof(version), version, $"there is no serializer for {version}");

            }

        }

    }

}