using System;

using System.Data;

using System.Linq;

using System.Text;

using System.Data.SqlClient;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        List<string> asd = new List<string>();

        asd.Add("First");

        asd.Add("Second");

        asd.Add("Third");       

        //string test = asd.Aggregate((i, j) => i + ", " + j);

        string test = asd.Select((i, j) => "@HU" + j.ToString()).Aggregate((i,j) => i + "," + j);

        Console.WriteLine(test);

    }

}