public partial class Form1 : Form
    {

        static private long number = (long)Math.Floor(GlobalRandom.NextDouble * 9_000_000_000L) + 1_000_000_000L;
        private string myValtwo;
        static public int myValone;
        static public int myValthee;
        static public int myValthree;
        static public int index;
        static Random rand = new Random();

        public static String[] Beginning = { "Georgi", "Svetoslav", "Boqn", "Alexandur", "Borislav",
                "Plamen", "Kaloqn", "Miroslav", "Luchezar", "Andrei", "Dobromir", "Istislav", "Nikolai", "Tsvetelin",
                "Ivan", "Kristiqn", "Zorin", "Hristo", "Konstantin", "Boris", "Kosta", "Sasho", "Bobi",
                "Tsvetizar", "Miro" };
        public static String[] Middle = { "Georgiev", "Boqnov", "Tsvetanov", "Ivanov", "Luchezarov", "Nikolaev",
                "Plamenov", "Kristiqnov", "Hristov", "Borislavov", "Tsvetizarov", "Zorinov", "Sasho", "Miroslavov", "Petrov",
                "Konstantinov", "Preslavski", "Kaloqnov", "Borisov", "Kosta" };
        public static String[] End = { "Georgiev", "Boqnov", "Luchezarov", "Miroslavov", "Petrov", "Hristov", "Nikolaev",
                "Plamenov", "Konstantinov", "Kosta", "Sasho", "Borisov", "Ivanov" };

        public string MyValtwo
        {
            get { return myValtwo; }
            set { myValtwo = value; }
        }

        internal static class GlobalRandom
        {
            private static System.Random randomInstance = null;

            public static double NextDouble
            {
                get
                {
                    if (randomInstance == null)
                        randomInstance = new System.Random();

                    return randomInstance.NextDouble();
                }
            }
        }
        public Form1()
        {
            InitializeComponent();
        }

         private void  textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void textBox2_TextChanged(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Randomizer for values
            string result = myValone.ToString() + " " + myValthee.ToString() + " " + myValthree.ToString();
            MyValtwo = number.ToString();

            if (true)
            {
                textBox1.Text = result;
                textBox2.Text = MyValtwo;
            }
            MessageBox.Show("Your new Personal ID is generated!", "Success!");
        }
        private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
        {
            Char chr = e.KeyChar;
            if (!Char.IsDigit(chr) && chr != 8)
            {
                e.Handled = true;
            }
        }
    }