private void bookReservationButton_Click(object sender, EventArgs e)
        {
            BookReservation form = new BookReservation(Model);

            form.Dock = DockStyle.Fill;
            form.MdiParent = this.MdiParent;
            form.Show();
            form.WindowState = FormWindowState.Maximized;
        }
 private void button8_Click(object sender, EventArgs e)
 {
     BookReservation bookReservation = new BookReservation(Model);
     bookReservation.Dock = DockStyle.Fill;
     bookReservation.MdiParent = this.MdiParent;
     bookReservation.Show();
     bookReservation.WindowState = FormWindowState.Maximized;
 }