using System;

using System.Linq;

using System.IO;

using CsvHelper;

using System.Globalization;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var result = new List<Test>();

        using (var stream = new MemoryStream())

        using (var writer = new StreamWriter(stream))

        using (var reader = new StreamReader(stream))

        using (var csv = new CsvReader(reader, CultureInfo.InvariantCulture))

        {

            //Csv Creation

            writer.WriteLine("id,speed,type,weight");

            writer.WriteLine("1,40,type1,5.4");

            writer.WriteLine("2,43,type2,");

            writer.WriteLine("3,16,type3,5.2");

            writer.Flush();

            stream.Position = 0;

            csv.Configuration.HasHeaderRecord = true;

            csv.Configuration.Delimiter = ",";

            result = csv.GetRecords<Test>().ToList();           

        }

        result.Dump();

    }

    public class Test{

        public int id{get;set;}

        public int speed{get;set;}

        public string type{get;set;}

        public float? weight{get;set;}

    }

}