using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public class trap

    {

        public string Name;

        public trap(string nom){

            Name = nom;

        }

    }

    public static void Main()

    {

        List<trap> test = new List<trap>();

        for(var i=0; i<10; i++)

        {

            test.Add(new trap(@"value nb-i"));

        }

        List<string> l = new List<string>(new string[] {"value nb-1","value nb-2","value nb-3"});

        foreach (var t in test.FirstOrDefault(x => x.Name == "test").ToList())

        {

            Console.WriteLine(t);

        }

    }

}