/// <summary>
    /// Interaction logic for Window3.xaml
    /// </summary>
    public partial class Window3 : Window
    {
        public Window3()
        {
            InitializeComponent();
        }

        private void btnMenu_Click(object sender, RoutedEventArgs e)
        {
            Window1 objUI = new Window1();
            objUI.Show();
            Close();
        }

        private void btnBatgen_Click(object sender, RoutedEventArgs e)
        {
            string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\FOLDERNAME";

            // 5 accounts

            string[] temp_all = new string[5];

            // define counter

            int i = 0;

            // init streamreader

            using (FileStream fs = File.OpenRead(path + "\\class1.txt"))
            using (StreamReader sr = new StreamReader(fs))
            {
                // while there are still lines of text to read, keep looping

                while (sr.EndOfStream == false)
                {
                    // add line of text to the array

                    temp_all[i] = sr.ReadLine();

                    // increment counter

                    i = i + 1;
                }
            }



            // password

            string[] wordarray = { "You", "gave", "me", "life", "now", "show", "me", "how", "to", "live" };

            // define string

            string password = "";

            // random instance

            Random rand = new Random();

            for (int i = 0; i < 2; i++)
            {
                password = password + rand.Next(0, wordarray.Length - 1);
            }

            for (int i = 0; i < temp_all.Length; i++)
            {
                string anAccount = temp_all[i];

				string[] accarr = anAccount.Split(','); // turns the string into an array of strings

				string surname = accarr[1]; // select the surname from the array

				string studentNo = accarr[4];

                // gen username Here

                //string temp_username = temp_all.

                string username = surname.Substring(0, 3); // take first threee letters of surname

                username = username + studentNo; // adds the student number to the username

                anAccount = anAccount + "," + username + "," + password;

                // save back to array

                temp_all[i] = anAccount;
            }

            // output to file

            using (FileStream fs = File.Open(path + "\\output.txt", FileMode.Append))
            using (TextWriter writer = new StreamWriter(fs))
            {
                // header

                writer.WriteLine("/*---------------------------------------------------------*/");
                writer.WriteLine(String.Format("/*Time: {0} User: {1}.*/",
                         DateTime.Now, "Reece"));
                writer.WriteLine("/*---------------------------------------------------------*/");

                // now write each line

                for (int j = 0; j < temp_all.Length; j++)
                {
                    writer.WriteLine(temp_alloutputArr[j]);
                }

            }
        }
    }
}