public ActionResult CreateSave(AuthorModel a)
{
AuthorFactory factory = new AuthorFactory();
a.a_id = factory.自動產生a_id();
a.a_Birth = Request.Form["a_Birth"];
int point = a.image.FileName.LastIndexOf(".");
//副檔名
string extention = a.image.FileName.Substring(point, a.image.FileName.Length - point);
//這一行會幫我們在上傳到資料庫的時候 重新命名，例如 FB 的檔名那樣，16進制的編碼
string photoName = Guid.NewGuid().ToString() + extention;
//把 SaveAs 變成相對路徑的方法
a.image.SaveAs(Server.MapPath("../作者照片/" + photoName));
a.a_Image = "../作者照片/" + photoName;
factory.Create(a);
return(RedirectToAction("Create"));
}