static public void DistroyForm()
{
Form_DanhMucPhim?.Dispose();
Form_DatVe?.Dispose();
Form_PhongChieuPhim?.Dispose();
Form_RapPhim?.Dispose();
}
static public void ShowFormDatVe()
{
if (Form_DatVe == null || Form_DatVe.IsDisposed == true)
{
Form_DatVe = new DatVe
{
Visible = true
};
}
Form_DatVe.Activate();
return;
}
