C# Dosyaya Yazma

int sayi = 50;

if(sayi >= 20 and sayi <= 50){
    StreamWriter Yaz = new StreamWriter("C:\Sayi.txt");
    Yaz.Write(sayi.ToString());
    Yaz.Close();
}else{
    MessageBox.Show("Lütfen 20 ile 50 arası sayı giriniz!","Program");
}

using (var wrtr = new StreamWriter("outputFile.txt", false))
{
  for (int i = 20; i < 50; i++)
  {
    wrtr.WriteLine(OtherMethod(i));
  }
}           }

    private void button1_Click(object sender, EventArgs e)
        {
            double grs80a = 6378137.00, grs80b = 6356752.3141;
            double Enlem, Boylam, Yukseklik;

            Enlem = Convert.ToDouble(txtEnlem.Text);
            Boylam = Convert.ToDouble(txtBoylam.Text);
            Yukseklik = Convert.ToDouble(txtYukseklik.Text);

            double A, B;
            A = (Math.PI / 180) * Enlem;
            B = (Math.PI / 180) * Boylam;

            double ke2;
            ke2 = ((grs80a * grs80a) - (grs80b * grs80b)) / (grs80a * grs80a);

            double N;
            N = (grs80a / (Math.Sqrt(1 - (ke2 * ((Math.Sin(A)) * (Math.Sin(A)))))));

            double X, Y, Z;
            X = (N + Yukseklik) * (Math.Cos(A)) * (Math.Cos(B));
            Y = (N + Yukseklik) * (Math.Cos(A)) * (Math.Sin(B));
            Z = (((1 - ke2) * N + Yukseklik)) * (Math.Sin(B));

            lblX.Text = X.ToString();
            lblY.Text = Y.ToString();
            lblZ.Text = Z.ToString();

private static const double GRS80A = 6378137.00;
private static const double GRS80B = 6356752.3141;
private static const double KE2 = (GRS80A * GRS80A - GRS80B * GRS80B) / (GRS80A * GRS80A); // Sabit değerlerden oluştuğu için bu da bir sabittir.

private Point3D GetDataFromGUI()
{
  // TODO Try-Catch ile kontrol edilse çok daha iyi olur.
  double enlem = Convert.ToDouble(txtEnlem.Text);
  double boylam = Convert.ToDouble(txtBoylam.Text);
  double yukseklik = Convert.ToDouble(txtYukseklik.Text);
  return new Point3D(enlem, boylam, yukseklik);
}

private Point3D CalculateXYZ(Point3D coor)
{
  double enlemRad = (Math.PI / 180) * coor.X;
  double boylamRad = (Math.PI / 180) * coor.Y;
  double n = GRS80A / Math.Sqrt(1 - KE2 * Math.Sin(enlemRad) * Math.Sin(enlemRad)); // Çarpma zaten çıkart işlemine göre önceliklidir paranteze gerek yok
  double x = (n + coor.Z) * Math.Cos(enlemRad) * Math.Cos(boylamRad);
  double y = (n + coor.Z) * (Math.Cos(enlemRad)) * (Math.Sin(boylamRad));
  double z = ((1 - KE2) * n + coor.Z) * Math.Sin(boylamRad);
  return new Point3D(x, y, z);
}

private void UpdateGUI(Point3D xyz)
{
  this.lblX.Text = xyz.X.ToString();
  this.lblY.Text = xyz.Y.ToString();
  this.lblZ.Text = xyz.Z.ToString();
}

private void button1_Click(object sender, EventArgs e)
{
  UpdateGUI(CalculateXYZ(GetDataFromGUI()));
}

List<Point3D> points = new List<Point3D>();
for(int i = 20; i <= 50; i++)
{
  points.Add(CalculateXYZ(i, 30, 1000));   
}

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+=1)
            for (double j = Convert.ToDouble(textBox3.Text); j <= Convert.ToDouble(textBox4.Text); j += 1)
            for (double k = Convert.ToDouble(textBox5.Text); k <= Convert.ToDouble(textBox6.Text); k += 1)

                    {

                        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);
                    Kayit.WriteLine(deneme1.Text);
                    Kayit.Close();
                }
           

        }

 

     
    }
}