WriterAddController

     WriterValidator writerValidator = new WriterValidator();
     WriterManager writerManager = new WriterManager(new EfWriterDal());
    
    [HttpGet]
            public ActionResult EditWriter(int id)
            {
                var writerValue = writerManager.GetByID(id);
    
                return View(writerValue);
            }
            [HttpPost]
            public ActionResult EditWriter(Writer writer, int id)
            {
                var writerValue = writerManager.GetByID(id);
                string Yol;
                if (writer.WriterImage == null)
                 {
                    Yol = "~/img/Writer/user1.jpg";
                    writer.WriterImage = Yol;
                }
                else
                {
                    Yol = "~/img/Writer/" + writer.WriterImage.ToString();
                  
                }
                 
                ValidationResult result = writerValidator.Validate(writer);
                if (Request.Files.Count != 0)
                {
                    string DosyaAdi = Path.GetFileName(Request.Files[0].FileName);
                    if (DosyaAdi!=null&&DosyaAdi.Length > 0)
                    {
                        
                        //  string Uzanti = Path.GetExtension(Request.Files[0].FileName);
                         Yol = "~/img/Writer/" + DosyaAdi;
                        Request.Files[0].SaveAs(Server.MapPath(Yol));
                        writer.WriterImage = Yol;
                    }
                    
    
                }
                if (result.IsValid)
                {
                    writer.WriterImage = Yol;
                    writerManager.WriterUpdate(writer);
                    return RedirectToAction("Index");
    
                }
                else
                {
                    foreach (var item in result.Errors)
                    {
                        ModelState.AddModelError(item.PropertyName, item.ErrorMessage);
                    }
                    
                }
                return View();
            }