سلام من از مثال شما استفاده کردم برای آپلود کردن فایل تو سرور!

الان فایل آپلود میشه ولی من نتونستم اسم فایلو عوض کنم!

میشه راهنمایی کنید

این قسمت اپلودشته:

 public ActionResult Upload(FormCollection form, HttpPostedFileBase file)
        {
               //HttpPostedFileBase file = Request.Files[0 ];
         ViewModel.UploadsViewModel uploadsViewModel = Session["Uploads"] != null ? Session["Uploads"] as ViewModel.UploadsViewModel : new ViewModel.UploadsViewModel();
           uploadsViewModel.ID = long.Parse(form["id"]);
            ViewModel.File upload = new ViewModel.File();
            upload.FileID = uploadsViewModel.Uploads.Count + 1;
            upload.FileName= file.FileName;
            upload.FilePath = "~/Uploads/"+file.FileName;
        

            //if (file.ContentLength < 4048576)    we can check file size before saving if we need to restrict file size or we can check it on client side as well
            //{

                if (file != null)
                {
                    file.SaveAs(Server.MapPath(upload.FilePath));
                    uploadsViewModel.Uploads.Add(upload);
                    Session["Uploads"] = uploadsViewModel;
                }

                // Save FileName and Path to Database according to your business requirements

            //}


            return PartialView("~/Views/Shared/_UploadsPartial.cshtml", uploadsViewModel.Uploads);
        }