private void button4_Click(object sender, EventArgs e)
        {
            CorDetails f2 = new CorDetails("admin", "admin");

            this.Hide();
            f2.Show(this);
        }
        private void button5_Click(object sender, EventArgs e)
        {
            CorDetails f2 = new CorDetails(Password, "lec");

            this.Hide();
            f2.Show(this);
        }