using System;

using System.IO;

using System.Text;

using Newtonsoft.Json;

using MiniExcelLibs;                    

public class Program

{

    public static void Main()

    {

        // SaveAs & Create by MemoryStream

        Byte[] bytes = null;

        using (var stream = new MemoryStream())

        {

            var value = new[] { new { A = "A1", B = "B1" }, new {A="A2",B="B2"}};

            stream.SaveAs(value: value,excelType:ExcelType.CSV);

            bytes = stream.ToArray();

            Console.WriteLine(Encoding.UTF8.GetString(bytes));

            /*result:

                A,B

                A1,B1

                A2,B2

            */

        }

        using (var stream = new MemoryStream(bytes))

        {

            var rows = stream.Query(useHeaderRow:true);

            Console.WriteLine(JsonConvert.SerializeObject(rows)); // result : [{"A":"A1","B":"B1"},{"A":"A2","B":"B2"}]

        }

    }

}