sentiment analysis- how to change change arff format

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;

namespace okumadeneme
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        //sentiment anaylysis and changing txt to arff format
        private void btnOku_Click(object sender, EventArgs e)
        {
            for (int i = 1; i < 3; i++)
            {
                StreamReader sr = new StreamReader("c:\\" + i + ".txt");
                rtbAl.Text += sr.ReadLine();
                sr.Close();
            }
            
            string a = rtbAl.Text;
            //splitting a to know how many sentence in the document
            string[] nokta = a.Split('.');
            for (int i = 0; i < nokta.Length; i++)
            {
                rtbOkunan.Text += nokta[i] + " " + "\n";
                //rtbOkunan2.Text += nokta[i] + " " + "\n";
            }
            //here is for the words that in the sentence
            string b = rtbOkunan.Text;
            string[] bosluk = b.Split(' ');
            

            for (int i = 0; i < bosluk.Length-(nokta.Length-1); i++)
            {
                rtbOkunan.Text += "@attribute " + "\"" + bosluk[i] + "\"" + " integer" + "\n";
                
            }

            rtbOkunan.Text += "@data" + "\n";
            int sayac = 0;
            for (int i = 0; i < nokta.Length; i++)
            {
                for (int j = 0; j < bosluk.Length-(nokta.Length-1); j++)
                {
                    //count each word
                    MatchCollection kac = Regex.Matches(nokta[i], bosluk[j]);
                    sayac = kac.Count;
                    
                    if (sayac != 0)
                    {
                        rtbOkunan.Text += (j+1) + " " + sayac + ",";
                    }
                }
                
            }
            
        }
    }
}

@attribute "kaydirmazlik" integer
@attribute "tutabildigini" integer
@attribute "tozlanarak" integer
@attribute "kullanilacagindan" integer

@data

{0 1,1 1,2 1,3 2,4 1,5 1,6 1,7 1,8 1,9 1,10 1,11 1,12 1,13 1,14 1,15 1,16 1,17 1,18 1,19 1}
{0 0,14 1,93 1,94 1,95 1,96 1,97 1,98 1,99 1,100 1,101 1,102 1,103 1,104 1,105 1,106 1}
{0 1,2 1,3 1,24 1,31 1,107 1,108 1,109 1,110 1,111 1,112 1}
{0 0,186 1,187 1,188 1,189 1,190 1,191 1,192 1,193 1,194 1,195 1}
{0 1,24 1,73 1,129 1,196 1,197 1,198 1,199 1,200 1,201 1,202 1,203 1,204 1}