public ActionResult ThemMoi(Category objCategory, HttpPostedFileBase fUpload)
        {
            if (objCategory != null)
            {
                string fileName = "";
                if (fUpload != null && fUpload.ContentLength > 0)
                {
                    fileName = Path.GetFileName(fUpload.FileName);

                    fUpload.SaveAs(Server.MapPath("~/Content/Images/" + fileName));
                    //Lưu vào db
                    objCategory.Image = fileName;
                }

                //xu ly
                CategoryBusiness categoryBusiness = new CategoryBusiness();
                bool             ketQua           = categoryBusiness.ThemMoiCategory(objCategory);
                if (ketQua)
                {
                    return(RedirectToAction("Index"));
                }
            }
            else
            {
                return(HttpNotFound());
            }

            return(View());
        }