C# DataGridView İşlemleri

namespace bitirme2
{
    class helper
    {
        public static string file;

        public static DataTable DataTableFromTextFile(string location, char delimiter = '\t')
        {
            DataTable result;
            location = file;

            string[] LineArray = File.ReadAllLines(location);
            result = FromDataTable(LineArray, delimiter);
            return result;

        }
        private static DataTable FromDataTable(string[] LineArray,char delimiter)
        {
            DataTable dt = new DataTable();
            AddColumnToTable(LineArray, delimiter, ref dt);
            AddRowToTable(LineArray, delimiter, ref dt);

            return dt;


        }

        private static void AddRowToTable(string[] valueCollaction, char delimiter, ref DataTable dt)
        {
            for (int i=0; i<valueCollaction.Length;i++)
            {
                string[] values = valueCollaction[i].Split(delimiter);
                DataRow dr = dt.NewRow();
                for (int j=0;j<values.Length;j++)
                {
                    dr[j] = values[j];
                }
                dt.Rows.Add(dr);
            }
        }

        private static void AddColumnToTable(string[] columnCollectio, char delimiter, ref DataTable dt)
        {
            string[] columns = columnCollectio[0].Split(delimiter);
            foreach (string columnName in columns)
            {
                DataColumn dc = new DataColumn(columnName, typeof(string));
                dt.Columns.Add(dc);

            }
        }
    }
}

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.Drawing.Printing;

namespace bitirme2
{
    public partial class dyazma : Form
    {
        public dyazma()
        {
            InitializeComponent();
            
        }
        PrintDialog PRD = new PrintDialog();
        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {

            
            for (double i = Convert.ToDouble(textBox1.Text); i <= Convert.ToDouble(textBox2.Text); i+=0.001)
            for (double j = Convert.ToDouble(textBox3.Text); j <= Convert.ToDouble(textBox4.Text); j += 0.001)
            for (double k = Convert.ToDouble(textBox5.Text); k <= Convert.ToDouble(textBox6.Text); k += 0.001)

                    {

                        double wgs84a = 6378137.00, wgs84b = 6356752.31424518;
                        double A,B;
                A = (Math.PI / 180) * i;
                 B = (Math.PI / 180) * j;


                        double ke2;
                        ke2 = ((wgs84a * wgs84a) - (wgs84b * wgs84b)) / (wgs84a * wgs84a);

                        double N;
                        N = (wgs84a / (Math.Sqrt(1 - (ke2 * ((Math.Sin(A)) * (Math.Sin(A)))))));

                        double X, Y, Z;
                        X = (N + k) * (Math.Cos(A)) * (Math.Cos(B));
                        Y = (N + k) * (Math.Cos(A)) * (Math.Sin(B));
                        Z = (((1 - ke2) * N + k)) * (Math.Sin(B));
                        this.deneme1.Items.Add(X);
                        this.deneme2.Items.Add(Y);
                        this.deneme3.Items.Add(Z);
                      

                    }
        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void button2_Click(object sender, EventArgs e)
        {
          
            
                SaveFileDialog save = new SaveFileDialog();
                save.Filter = "Metin Dosyası|*.txt";
                save.OverwritePrompt = true;
                save.CreatePrompt = true;

            if (save.ShowDialog() == DialogResult.OK)
            {
                StreamWriter Kayit = new StreamWriter(save.FileName);
                int count = deneme1.Items.Count;
                foreach (int value in Enumerable.Range(0, count))
                {
                    String x = deneme1.Items[value].ToString();
                    String y = deneme2.Items[value].ToString();
                    String z = deneme3.Items[value].ToString();
                    String line = String.Format("{0}\t{1}\t{2}", x, y, z);
                    Kayit.WriteLine(line);



                }



                Kayit.Close();
             }
            

        }

  

      
    }
}