public ActionResult Edit(SectionViewModel viewmodel)
        {
            IList<Section> list = new List<Section>();
            Section section = null;
            string[] arrSection = Request.Params["SectionName"].Split(',');
            string[] arrSectionId = Request.Params["SectionId"].Split(',');

            for (int i = 0; i < arrSection.Length; i++)
            {
                section = new Section();
                section.EzineId = viewmodel.EzineId;
                section.Id = viewmodel.SectionId;
                section.Id = int.Parse(arrSectionId[i]);
                section.Name = arrSection[i].ToString();

                list.Add(section);
            }

            var result = sectionRepository.EditSection(list);
            if (result)
            {
                return RedirectToAction("Index", "Ezine");
            }
            else
            {
                return View();
            }
        }
        /// <summary>
        /// 保存每个杂志的多个章节
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public bool Save(Section model)
        {
            string[] arrName = model.Name.TrimEnd(',').Split(',');

            foreach (var item in arrName)
            {
                var entity = new Section();
                entity.EzineId = model.EzineId;
                entity.Name = item.ToString();

                db.Sections.Add(entity);
            }
            return db.SaveChanges() > 0;
        }
        /// <summary>
        /// 添加目录
        /// </summary>
        /// <returns></returns>
        public JsonResult Save(Section model)
        {
            var result = sectionRepository.Save(model);

            return Json(result);
        }