private void btnThemMaPhong_Click(object sender, EventArgs e)
{
frmPhong p = new frmPhong();
p.ShowDialog();
pctrl1.HienthiComboBox(cmbMaPhg);
}
private void toolStripThemPhong_Click(object sender, EventArgs e)
{
frmPhong p = new frmPhong();
p.ShowDialog();
}
private void btnPhong_Click(object sender, EventArgs e)
{
frmPhong phong = new frmPhong();
phong.ShowDialog();
}