public ActionResult ChangePointComment(int problemId, string point, int commentId) { switch (point) { case "+": _commentRepo.ChangePoint(commentId, 1); break; case "-": _commentRepo.ChangePoint(commentId, 0); break; default: return(RedirectToAction("Detail", new { id = problemId })); } return(RedirectToAction("Detail", new { id = problemId })); }