Read/Write To Text File

// Write to text file
// The output will be in your Bin/Debug folder by default, this can be changed by adding your own path

                System.IO.StreamWriter StreamWriter1 =
                new System.IO.StreamWriter("myFile.txt");
                StreamWriter1.WriteLine(textBox1.Text);
                StreamWriter1.Close();


// Read the text file
            System.IO.StreamReader StreamReader1 =
            new System.IO.StreamReader("myFile.txt");
            textBox1.Text = StreamReader1.ReadToEnd();
            StreamReader1.Close();

// Write to specific lines in a text file
// Note that the first line is [0]
            StreamWriter writer = new StreamWriter("myFile.txt");
            writer.WriteLine("Line1");
            writer.WriteLine("Line2");
            writer.WriteLine("Line3");
            writer.WriteLine("Line4");
            writer.Close();

// Read from specific lines in a text file
// Note that the first line is [0]

StreamReader reader = new StreamReader("myFile.txt");
            string strAllFile = reader.ReadToEnd().Replace("\r\n", "\n").Replace("\n\r", "\n");
            string[] arrLines = strAllFile.Split(new char[] { '\n' });
            textBox1.Text = arrLines[0];
            textBox2.Text = arrLines[1];
            reader.Close();

// The output of this will be textBox1 will say "Line1" and textBox2 will say "Line2"