public int SaveArt(Art art)
        {
            int result = 0;
            if (art.ArtID == 0)
            {
                context.Arts.Add(art);
                HttpRuntime.Cache.Remove("Arts");
            }
            else
            {
                context.Entry(art).State = EntityState.Modified;
                HttpRuntime.Cache.Remove("Arts");
                HttpRuntime.Cache.Remove("Arts" + art.ArtID);
            }

            context.SaveChanges();
            result = art.ArtID;
            return result;
        }
        public ActionResult EditArt(Art art)
        {
            if (ModelState.IsValid)
            {
                art.CreationDate = DateTime.Now;

                foreach (string file in Request.Files)
                {
                    var uploadedFile = this.Request.Files[file];
                    if (uploadedFile != null && uploadedFile.ContentLength > 0)
                    {
                        if (uploadedFile.ContentLength > 1024 * 1024 * 4)
                        {
                            ModelState.AddModelError("uploadError", "File size can't exceed 4 MB");
                            return View(art);
                        }

                        string fileName = uploadedFile.FileName;
                        string[] splitFileName = fileName.Split('.');
                        int idFileName = artsRepository.SaveArt(art);
                        fileName =
                            Path.GetFileName(idFileName.ToString() + '.' + splitFileName[splitFileName.Length - 1]);

                        var path = Path.Combine(Server.MapPath("~/Content/ArtImages/"), fileName);

                        try
                        {
                            if (System.IO.File.Exists(path))
                                System.IO.File.Delete(path);

                            uploadedFile.SaveAs(path);
                        }
                        catch (Exception)
                        {

                            ModelState.AddModelError("uploadError", "Can't save file to disk");
                        }

                    }
                    else
                    {
                        ModelState.AddModelError("uploadError", "You must upload an art image in this art section");
                        return View(art);
                    }
                }

                TempData["message"] = string.Format("{0} has been saved", art.ArtTitle);
                return RedirectToAction("ShowArts");
            }
            else
            {
                // there is something wrong with the data values
                return View(art);
            }
        }
 public void DeleteArt(Art art)
 {
     context.Arts.Remove(art);
     context.SaveChanges();
     HttpRuntime.Cache.Remove("Arts");
 }