using System;

using System.Linq;

​

namespace testingns

{

public class Program

{

    public static void Main()

    {

        var carriers = new Carrier[]{ new Carrier{Id = 1, CarrierName = "Verizon"}, new Carrier{Id = 2, CarrierName = "ATT"}, new Carrier{Id = 3, CarrierName = "TMobile"} };

        var authorizations = new Authorization[]{ new Authorization{IsAuthorized = true, CarrierName = "Verizon"}, new Authorization{IsAuthorized = false, CarrierName = "ATT"}};

        var carrierAuthorizationList = carriers.Select(x=> { 

            return new CarrierAuthorization

            {

                Id = x.Id,

                CarrierName = x.CarrierName,

                IsAuthorized = authorizations.Any(y=> y.CarrierName == x.CarrierName && y.IsAuthorized)

            };

        });

        foreach(var item in carrierAuthorizationList)

        {

            Console.WriteLine(string.Format("{0}    {1}     {2}", item.Id, item.CarrierName, item.IsAuthorized));

        }

    }

    public class Carrier

    {

        public int Id {get; set;}

        public string CarrierName {get; set;}

    }

    public class Authorization

    {

        public string CarrierName {get; set;}

        public bool IsAuthorized {get; set;}    

    }

    public class CarrierAuthorization

    {

        public int Id {get; set;}

        public string CarrierName {get; set;}

        public bool IsAuthorized {get; set;}    

    }

}

}

​