private void 예약관리ToolStripMenuItem_Click(object sender, EventArgs e)
{
ManageReservationForm manageReservationForm = new ManageReservationForm();
manageReservationForm.ShowDialog();
}
private void reservationsToolStripMenuItem_Click(object sender, EventArgs e)
{
ManageReservationForm frm = new ManageReservationForm();
frm.Show(this);
}