private void Btn_DatVe_Click(object sender, EventArgs e)
{
Pn_main_function.Focus();
MyResources.ShowFormDatVe();
}
private void Btn_PhongChieuPhim_Click(object sender, EventArgs e)
{
Pn_main_function.Focus();
MyResources.ShowFormPhongChieuPhim();
}