public ActionResult Create(Support support)
        {
            if (ModelState.IsValid)
            {
                List<FileDetail> fileDetails = new List<FileDetail>();
                for (int i = 0; i < Request.Files.Count; i++)
                {
                    var file = Request.Files[i];

                    if (file != null && file.ContentLength > 0)
                    {
                        var fileName = Path.GetFileName(file.FileName);
                        FileDetail fileDetail = new FileDetail()
                        {
                            FileName = fileName,
                            Extension = Path.GetExtension(fileName),
                            Id = Guid.NewGuid()
                        };
                        fileDetails.Add(fileDetail);

                        var path = Path.Combine(Server.MapPath("~/App_Data/Upload/"), fileDetail.Id + fileDetail.Extension);
                        file.SaveAs(path);
                    }
                }

                support.FileDetails = fileDetails;
                db.Supports.Add(support);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(support);
        }
        public ActionResult Edit(Support support)
        {
            if (ModelState.IsValid)
            {

                //New Files
                for (int i = 0; i < Request.Files.Count; i++)
                {
                    var file = Request.Files[i];

                    if (file != null && file.ContentLength > 0)
                    {
                        var fileName = Path.GetFileName(file.FileName);
                        FileDetail fileDetail = new FileDetail()
                        {
                            FileName = fileName,
                            Extension = Path.GetExtension(fileName),
                            Id = Guid.NewGuid(),
                            SupportId = support.SupportId
                        };
                        var path = Path.Combine(Server.MapPath("~/App_Data/Upload/"), fileDetail.Id + fileDetail.Extension);
                        file.SaveAs(path);

                        db.Entry(fileDetail).State = EntityState.Added;
                    }
                }

                db.Entry(support).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("Index");
            }
            return View(support);
        }