YIL HESAPLAMA PROGRAMI-C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace ornek1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private DateTime zaman;

        private void button1_Click(object sender, EventArgs e)
        {


            zaman = DateTime.Now;

            label1.Text = zaman.ToString();
            label1.Text += "\n" + zaman.DayOfWeek.ToString();

        }


        private void button2_Click(object sender, EventArgs e)
        {
            DateTime yenizaman;

            yenizaman = zaman.AddYears(Convert.ToInt32(textBox1.Text));

            label2.Text = yenizaman.ToString();
            label2.Text += "\n" + yenizaman.DayOfWeek.ToString();

        }



        private void button3_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
    }
}