public ActionResult Create(string topic)
        {
            Bio bio = new Bio();
            bio.Topic = topic;
            IEnumerable<Category> categories = _categoryRepository.FindByType("bio");
            ViewData["categories"] = new SelectList(categories, "ID", "Name", categories.FirstOrDefault());

            return View(bio);
        }
        public ActionResult Create(Bio bio, int categoryId, HttpPostedFileBase file)
        {
            if (ModelState.IsValid)
            {
                string fileName = "no_image.gif";
                if (file != null)
                {
                    fileName = Path.GetFileName(file.FileName);
                    file.SaveAs(Path.Combine(Server.MapPath(_bioImagePath), fileName));
                }
                bio.Category = _categoryRepository.GetById(categoryId);
                bio.ImageName = fileName;
                UpdateModel<Bio>(bio);

                _bioRepository.Add(bio);
                UnitOfWork.Save();
                return RedirectToAction("Index", "Bio"); // action = BoardAndStaff
            }

            return View(bio);
        }
        public ActionResult Edit(int id, Bio bio, int categoryId, HttpPostedFileBase file)
        {
            var BioInDb = _bioRepository.GetById(id);

            BioInDb.Category = _categoryRepository.GetById(categoryId);

            if (file != null)
            {
                string fileName = Path.GetFileName(file.FileName);
                file.SaveAs(Path.Combine(Server.MapPath(_bioImagePath), fileName));
                BioInDb.ImageName = fileName;
            }

            if (TryUpdateModel(BioInDb))
            {
                UnitOfWork.Save();
                return RedirectToAction("Index", "Bio");
            }

            return View(bio);
        }