private void btnThemNCC_Click(object sender, EventArgs e)
        {
            MoFormTTNCC.MoFormNCC = 1;
            FormThongTinNCC FTTNCC = new FormThongTinNCC();

            FTTNCC.Show();
            this.Close();
        }
        private void btnThongTinNhaCungCap_Click_1(object sender, EventArgs e)
        {
            this.Hide();
            hidemenu();
            FormThongTinNCC TTNCC = new FormThongTinNCC();

            TTNCC.Show();
        }