private void mnQLPhong_Click(object sender, System.EventArgs e) { frmSDDichVu f = new frmSDDichVu(); f.MdiParent = this; f.Show(); }
private void mnQLPhong_Click(object sender, System.EventArgs e) { frmSDDichVu f = new frmSDDichVu(); f.MdiParent=this; f.Show(); }