using System;

using System.Linq;

using System.Reflection;

public class Program

{

    public static void Main()

    {

        var csvParser = new CsvParser();

        var enumValues = Enum.GetValues(typeof(PlanType)).Cast<PlanType>();

        var enumFields = typeof(PlanType).GetFields();

        var planTypes = enumValues.Where(e => csvParser.GetField(enumFields.FirstOrDefault(f => f.Name == e.ToString())?.GetCustomAttribute<CsvHeaderAttribute>()?.Value) == "1");

        Console.WriteLine(String.Join("\r\n", planTypes));

    }

}

​

public enum PlanType

{

    [CsvHeader("WLFR_BNFT_HEALTH_IND")]

    Health,

    [CsvHeader("WLFR_BNFT_DENTAL_IND")]

    Dental,

    [CsvHeader("WLFR_BNFT_VISION_IND")]

    Vision,

    [CsvHeader("WLFR_BNFT_LIFE_INSUR_IND")]

    LifeInsurance,

    [CsvHeader("WLFR_BNFT_TEMP_DISAB_IND")]

    TemporaryDisability,

    [CsvHeader("WLFR_BNFT_LONG_TERM_DISAB_IND")]

    LongTermDisability,

    [CsvHeader("WLFR_BNFT_UNEMP_IND")]

    SupplementalUnemployment,

    [CsvHeader("WLFR_BNFT_DRUG_IND")]

    PrescriptionDrug,

    [CsvHeader("WLFR_BNFT_STOP_LOSS_IND")]

    StopLoss,

    [CsvHeader("WLFR_BNFT_HMO_IND")]

    HMO,

    [CsvHeader("WLFR_BNFT_PPO_IND")]

    PPO,

    [CsvHeader("WLFR_BNFT_INDEMNITY_IND")]

    Indemnity,

    [CsvHeader("WLFR_BNFT_OTHER_IND")]

    WelfareOther,

    [CsvHeader("UNALLOC_CONTRACTS_OTHER_IND")]

    OtherUnallocated,

    [CsvHeader("ALLOC_CONTRACTS_OTHER_IND")]

    OtherAllocated

}

​

[AttributeUsage(AttributeTargets.Field)]

public class CsvHeaderAttribute : Attribute

{

    public CsvHeaderAttribute(string value)

    {

        Value = value;

    }

​

    public string Value { get; set; }

}

​

// dummy csv parser

public class CsvParser

{

    public string GetField(string key)

    {

        return key?.Length % 2 == 0 ? "0" : "1";

    }

}