Microsoft.VisualBasic.FileIO.TextFieldParser vs String.Split

ReaderComparer.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.VisualBasic.FileIO;
using System.Diagnostics;

namespace ReaderComparer
{
    class Program
    {
        static string[] ReadArrayFromFile(string fileName)
        {
            string[] result = null;
            using (var reader = new StreamReader(fileName))
            {
                var size = Convert.ToInt32(reader.ReadLine());
                result = reader.ReadLine()
                        .Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
            }
            return result;
        }

        static string[] ReadArrayFromFileVb(string fileName)
        {
            var parser = new TextFieldParser(fileName);
            parser.HasFieldsEnclosedInQuotes = true;
            parser.SetDelimiters(" ");

            string[] fields = null;

            while (!parser.EndOfData)
            {
                fields = parser.ReadFields();
            }

            parser.Close();
            return fields;
        }

        static void Main(string[] args)
        {
            var stopwatch = new Stopwatch();
            stopwatch.Start();
            ReadArrayFromFile(args[0]);
            stopwatch.Stop();
            Console.WriteLine(stopwatch.ElapsedMilliseconds);

            var stopwatch1 = new Stopwatch();
            stopwatch1.Start();
            ReadArrayFromFileVb(args[0]);
            stopwatch1.Stop();
            Console.WriteLine(stopwatch1.ElapsedMilliseconds);

        }
    }
}