using System;

using Newtonsoft.Json.Linq;

using System.Linq;

using System.IO;

using System.Text;

using FluentFTP;

public class Program

{

    public static void Main()

    {

        string json = @"{

            ""fileName"": ""FNVAB20210902172954.CSV"",

            ""fileRows"": [

              {

                ""VABCCM"": ""2554458"",

                ""VABAAS"": ""2021"",

                ""VABMGS"": ""0902"",

                ""VABRMA"": ""UFJ5987360"",

                ""VABRMN"": ""1"",

                ""VABSPED"": ""114002849877"",

                ""VABRSD"": ""PAVA SRLS"",

                ""VABIND"": ""VIA ZANOTTI 101"",

                ""VABCAD"": ""71016"",

                ""VABLOD"": ""SAN SEVERO"",

                ""VABPRD"": ""FG""

              },

              {

                ""VABCCM"": ""2554458"",

                ""VABAAS"": ""2021"",

                ""VABMGS"": ""0902"",

                ""VABRMA"": ""UFJ5987360"",

                ""VABRMN"": ""1"",

                ""VABSPED"": ""114002849879"",

                ""VABRSD"": ""ELETTRAUTO ROSSI GIORGIO"",

                ""VABIND"": ""SS PER FIUGGI 155 KM 4.5"",

                ""VABCAD"": ""03011"",

                ""VABLOD"": ""TECCHIENA"",

                ""VABPRD"": ""FR""

              }

            ]

        }";     

        var csvJObj = JObject.Parse(json);

        var jArrFileRows = JArray.Parse(csvJObj.Property("fileRows").First.ToString());

        string fileName = csvJObj.GetValue("fileName").ToString();      

        //Console.WriteLine(fileName);

        var csvRowProps = String.Join("|", ((JObject)jArrFileRows.First).Properties().Select(p => p.Name)); 

        //Console.WriteLine(csvRowsProps);

        var csvRowsData = "";

        foreach (JObject jObjFileRow in jArrFileRows.Children<JObject>())

        {

            csvRowsData += String.Join("|", jObjFileRow.Properties().Select(p => p.Value)) + "\r\n";            

        }   

        var csvString = csvRowProps + "\r\n" + csvRowsData;

        Console.WriteLine(csvString);

        using(MemoryStream ms = new MemoryStream())

        {

            var sw = new StreamWriter(ms, new UnicodeEncoding());

            try

            {

                sw.Write(csvString);

                sw.Flush();

                ms.Seek(0, SeekOrigin.Begin);

                FtpClient client = new FtpClient("123.123.123.123", "david", "pass123");

​

                // connect to the server and automatically detect working FTP settings

                client.AutoConnect();

                client.Upload(ms,"");

            }

            finally

            {

                sw.Dispose();

            }

        }

    }

}