private void button1_Click(object sender, EventArgs e)
        {
            Hide();
            FrmManual2 frmManual2 = new FrmManual2();

            frmManual2.ShowDialog();
        }
        private void BtnManual2_Click(object sender, EventArgs e)
        {
            TmrState.Enabled = false;
            Hide();
            FrmManual2 frmManual2 = new FrmManual2();

            frmManual2.ShowDialog();
        }