public ActionResult IndexAuthor(AuthBookPublish model)
 {
     if (ModelState.IsValid)
     {
         authors.AddAuthor(model.author);
         AllViewBag();
         return(View("Index"));
     }
     else
     {
         AllViewBag();
         return(View("Index"));
     }
 }
 public ActionResult IndexPublisher(AuthBookPublish model)
 {
     if (ModelState.IsValid)
     {
         publisher.AddPublisher(model.publisher);
         AllViewBag();
         return(View("Index"));
     }
     else
     {
         AllViewBag();
         return(View("Index"));
     }
 }
        public ActionResult IndexBook(AuthBookPublish model, FormCollection form)
        {
            if (ModelState.IsValid)
            {
                //string strDDL = form["NameAuthor"].ToString();
                //string strDDLPublish = form["NamePublish"].ToString();
                book.AddBook(model.book, authors, publisher);
                //book.AddBook(model.book, strDDL, strDDLPublish, authors, publisher);
                AllViewBag();

                return(View("Index"));
            }

            else
            {
                AllViewBag();

                return(View("Index"));
            }
        }