1-) C# - metin belgesi okuma

private void button1_Click(object sender, EventArgs e)

        {

            if (openFileDialog1.ShowDialog()==DialogResult.OK)

            {

                StreamReader sr = new StreamReader(openFileDialog1.FileName);

                string satır = sr.ReadLine();

                while (satır!=null)

                {

                    listBox1.Items.Add(satır);

                    satır=sr.ReadLine();

                }

            }

        }