public ActionResult AddEditAddressBook(AddressBookModel model)
 {
     if (ModelState.IsValid)           //checking model is valid or not
     {
         DbData objDB  = new DbData(); //calling class DBdata
         string result = string.Empty;
         if (model.ID.HasValue)
         {
             result = objDB.UpdateData(model); // passing Value to DBClass from model
         }
         else
         {
             result = objDB.InsertData(model);
         }
         ViewData["result"] = result;
         ModelState.Clear(); //clearing model
         return(RedirectToActionPermanent("ManageAddressBook"));
         // return View();
     }
     else
     {
         // ModelState.AddModelError("", "Error in saving data");
         return(View(new AddressBookModel()));
     }
 }