public ActionResult Registration(RegistrationModel model)
 {
     if (ModelState.IsValid)
     {
         int id = signUpRepository.Operation(model);
         if (id > 0)
         {
             ModelState.Clear();
             ViewBag.Success = "Congratulation! Registration successfull";
         }
         else
         {
             ViewBag.Success = "UserName already exists";
         }
     }
     return(View());
 }