public IHttpActionResult GetPage(int itemId, int page)
 {
     try
     {
         return(Ok(BookPagesBL.GetPage(itemId, page)));
     }
     catch
     {
         return(NotFound());
     }
 }
 public IHttpActionResult GetBookById(int itemId)
 {
     try
     {
         return(Ok(BookPagesBL.GetBookById(itemId)));
     }
     catch
     {
         return(NotFound());
     }
 }