using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        IEnumerable<Comment> comments = new List<Comment>()

        {

            new Comment()

            {

                Id = 1,

                Text = "Comments Text 1"

            },

            new Comment()

            {

                Id = 2,

                Text = "Comments Text 2"

            }

        };

        var filteredComments = comments.Where(x => x.Id == 41).Select(x => x.Text).ToArray();

        Console.WriteLine(filteredComments.Length);

        var delimittedStrings = string.Join(Environment.NewLine, filteredComments);

        Console.WriteLine(delimittedStrings.Length);

        Console.WriteLine(delimittedStrings);

    }

    public class Comment

    {

        public int Id { get; set; }

        public string Text { get; set; }

    }

}