using System;

using System.Collections.Generic;

​

using System.Linq;

​

​

        //SETTING

        public class Type

        {

            public AccountType Key;

            public string Value;

        }

​

​

        //ORB

        public enum AccountType

        {

            IsSavingsAccount,

            IsOpenEndedLoanAccount,

            IsClosedEndedLoanAccount,

            IsCreditCardAccount,

            IsCertificateAccount,

            IsDemandDepositAccount

​

        }

​

        //ORB

        public class Account

        {

            public AccountType AccountType { get; set; }

            public string Number { get; set; }

        }

​

public class Program

{

    public static void Main()

    {

        var result = "IsSavingsAccount=100, IsOpenEndedLoanAccount=300, IsClosedEndedLoanAccount=300, IsCreditCardAccount=400, IsCertificateAccount=500, IsDemandDepositAccount=600";

​

            var members =

                result.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries)

                    .Select(x => x.Split(new[] {"="},StringSplitOptions.RemoveEmptyEntries))

                    .Where(x=> x.Length > 1)

                    .Select(x => new Type()

                    {

                        Key = (AccountType)Enum.Parse(typeof(AccountType), x[0],true),

                        Value = x[1]

                    });

​

            List<Account> accounts = new List<Account>();

            accounts.Add(new Account(){Number = "123",AccountType = AccountType.IsDemandDepositAccount });

            accounts.Add(new Account() { Number = "234", AccountType = AccountType.IsSavingsAccount });

            accounts.Add(new Account() { Number = "345", AccountType = AccountType.IsCreditCardAccount });

​

            var tokenAccounts = accounts.Where(a => a.Number != null).Select(a => new

            {

                AccountNumber = a.Number,

                AccountTypePrefix = members.Where(x => x.Key == a.AccountType).Select(x => x.Value).FirstOrDefault()

            }).Distinct().ToList();

            foreach(var a in tokenAccounts)

            {

                Console.WriteLine(a.AccountNumber+":"+a.AccountTypePrefix);

            }

    }

}

​

​