StreamReader rdr = new StreamReader(@"0.txt", Encoding.Default); string strAllFile = rdr.ReadToEnd().Replace("\r\n", "\n").Replace("\n\r", "\n"); string[] arrLines = strAllFile.Split(new char[] { '\n' }); textBox1.Text = arrLines[0]; textBox2.Text = arrLines[1]; textBox3.Text = arrLines[2]; rdr.Close();