public ActionResult Edit([Bind(Include = "MaLop,TenLop,NienKhoa,MaKhoa,MaHDT")] Lop lop)
{
if (ModelState.IsValid)
{
contextLop.Edit(lop);
return(RedirectToAction("Index"));
}
ViewBag.MaKhoa = new SelectList(contextKhoa.GetAll(), "MaKhoa", "TenKhoa", lop.MaKhoa);
return(View(lop));
}