Генерация списка литературы 2

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp21
{
    class Program
    {

        static Random rnd = new Random();
        static void Main(string[] args)
        {
            List<string> lines = new List<string>();
            string inputPath = @"INPUT_DIRECTORY\urls.txt";
            string outputPath = @"OUTPUT_DIRECTORY\MySources.xml";
            using (StreamReader sr = new StreamReader(inputPath))
            {
                string line;
                while ((line = sr.ReadLine()) != null)
                {
                    lines.Add(line);
                }
            }

            string xml = "";
            int counter = 1;
            for (int i = 0; i < lines.Count; i += 2)
            {
                string URL = lines.ElementAt(i);
                string Title = lines.ElementAt(i + 1);
                Uri uri = new Uri(URL);
                string InternetSiteTitle = uri.Host;
                string Year = "2019";
                string YearAccessed = "2019";
                var month = rnd.Next(4, 6);
                string MonthAccessed = month.ToString();
                int start, end;
                if (month == 4)
                {
                    start = 1;
                    end = 29;
                }
                else
                {
                    start = 1;
                    end = 19;
                }

                var day = rnd.Next(start, end);
                string DayAccessed = day.ToString();


                string Tag = "SomeTag" + counter;

                string xmlNode = $"<b:Source> <b:Tag>{Tag}</b:Tag> <b:SourceType>InternetSite</b:SourceType> <b:Guid>" + "{044F29E4-974C-42F2-9B2D-DA1E893E51AD}" + $"</b:Guid> <b:Title>{Title}</b:Title> <b:InternetSiteTitle>{InternetSiteTitle}</b:InternetSiteTitle> <b:Year>{Year}</b:Year> <b:YearAccessed>{YearAccessed}</b:YearAccessed> <b:MonthAccessed>{MonthAccessed}</b:MonthAccessed> <b:DayAccessed>{DayAccessed}</b:DayAccessed> <b:URL>{URL}</b:URL> </b:Source>";
                xml += xmlNode;
                if (counter % 3 == 0)
                {
                    xml = "<b:Sources SelectedStyle=\"\" xmlns:b=\"http://schemas.openxmlformats.org/officeDocument/2006/bibliography\" xmlns=\"http://schemas.openxmlformats.org/officeDocument/2006/bibliography\"> " + xml + " </b:Sources>";
                    outputPath = $@"C:\Users\zgame\Desktop\src2\MySources{counter}.xml";
                    using (StreamWriter sr = new StreamWriter(outputPath))
                    {
                        sr.Write(xml);
                    }
                    xml = "";
                }
                counter++;

            }
            outputPath = @"C:\Users\zgame\Desktop\MySources.xml";
            xml = "<b:Sources SelectedStyle=\"\" xmlns:b=\"http://schemas.openxmlformats.org/officeDocument/2006/bibliography\" xmlns=\"http://schemas.openxmlformats.org/officeDocument/2006/bibliography\"> " + xml + " </b:Sources>";

            using (StreamWriter sr = new StreamWriter(outputPath))
            {
                sr.Write(xml);
            }
            Console.WriteLine("Success");
            Console.ReadKey();
        }
    }
}