private void bunifuFlatButton3_Click(object sender, EventArgs e)
        {
            String    username  = bunifuMaterialTextbox1.Text;
            String    password  = bunifuMaterialTextbox2.Text;
            Nguoidung nguoidung = new Nguoidung(username, password);

            if (bus_nguoidung.checkNguoidung(nguoidung))
            {
                HomeForm homeform = new HomeForm();
                this.Hide();
                homeform.Show();
            }
            else
            {
                MessageBox.Show("Please input again!!!!");
            }
        }
 public ConsulterMoniteurs(HomeForm hf)
 {
     InitializeComponent();
     homeForm = hf;
     con      = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB;AttachDBFilename=C:\AlexiD\Stages2016.mdf;Integrated Security=True;Connect Timeout=30");
 }