private void btnManageRooms_Click(object sender, EventArgs e)
        {
            ManageRoomsForm manageRF = new ManageRoomsForm();

            manageRF.ShowDialog();
        }
        private void manageRoomsToolStripMenuItem_Click(object sender, EventArgs e)
        {
            ManageRoomsForm manageRF = new ManageRoomsForm();

            manageRF.ShowDialog();
        }