private void loadPhuongTien() { Form f = isActive(typeof(frmPhuongTien)); if (f == null) { frmPhuongTien fPhuongTien = new frmPhuongTien(); fPhuongTien.MdiParent = this; fPhuongTien.Show(); } }
private void quảnLýPhươngTiệnToolStripMenuItem_Click(object sender, EventArgs e) { Form frmPhuongtien = new frmPhuongTien(); frmPhuongtien.ShowDialog(); }