private void keygenform_Click(object sender, EventArgs e)
        {
            foreach (Form f in Application.OpenForms)
            {
                if (f.Name == "keygen")
                {
                    return;
                }
            }
            keygen a = new keygen();

            a.Show();
        }
        private void keygenMenu_Click(object sender, EventArgs e)
        {
            keygen a = new keygen();

            a.Show();
        }