private void button3_Click(object sender, EventArgs e)
{
List <int> hs = new List <int>();
HSB.Loadhsl(classcombo.SelectedItem.ToString());
if (HocSinhDTO.lisths.Count > 0)
{
foreach (var x in HocSinhDTO.lisths)
{
HSB.GetMaHS(x.Email);
HSB.DelBD(HocSinhDTO.id);
}
}
foreach (var s in clasDTO.lop)
{
if (s.TenL1 == classcombo.SelectedItem.ToString())
{
HSB.DelClass(s.MaL1);
HSB.Load();
HSB.loadBCM();
HSB.Loadkl();
MessageBox.Show("successful");
break;
}
}
}