public IActionResult Delete(int?Id) { if (Id == null) { return(NotFound()); } else { if (HttpContext.Session.GetString("VaiTro") == "NguoiQuanTri") { ViewBag.Name = HttpContext.Session.GetString("Ten"); var chuDe = chuDeService.GetChuDe(Id); return(View(chuDe)); } return(Redirect(@"~/NguoiDung/Login")); } }