C # PROGRAMI İLE ÖRNEK SORULAR-17

 using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

namespace sınıflar

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, System.EventArgs e)

        {

            textBox1.AppendText("KORKMAZ");

        }

       

    }

}