public async Task<ActionResult> DeleteConfirmed(int id)
 {
     NhomLinhVuc nhomLinhVuc = await db.NhomLinhVucs.FindAsync(id);
     db.NhomLinhVucs.Remove(nhomLinhVuc);
     await db.SaveChangesAsync();
     return RedirectToAction("Index");
 }
 public async Task<ActionResult> Edit([Bind(Include = "MaNhomLinhVuc,TenNhomLinhVuc")] NhomLinhVuc nhomLinhVuc)
 {
     if (ModelState.IsValid)
     {
         db.Entry(nhomLinhVuc).State = EntityState.Modified;
         await db.SaveChangesAsync();
         return RedirectToAction("Index");
     }
     return View(nhomLinhVuc);
 }
        public async Task<ActionResult> Create([Bind(Include = "MaNhomLinhVuc,TenNhomLinhVuc")] NhomLinhVuc nhomLinhVuc)
        {
            if (ModelState.IsValid)
            {
                db.NhomLinhVucs.Add(nhomLinhVuc);
                await db.SaveChangesAsync();
                return RedirectToAction("Index");
            }

            return View(nhomLinhVuc);
        }
 // GET: AdminNhomLinhVuc/Delete/5
 public async Task<ActionResult> Delete(int? id)
 {
     if (id == null)
     {
         return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
     }
     NhomLinhVuc nhomLinhVuc = await db.NhomLinhVucs.FindAsync(id);
     if (nhomLinhVuc == null)
     {
         return HttpNotFound();
     }
     return View(nhomLinhVuc);
 }