public ActionResult EditSusbscriber(int?id) { if (id != null) { M_Subscriber model = new M_Subscriber(); try { model = model.Edit(id); return(View(model)); } catch (M_CustomException ex) { ModelState.AddModelError("editsub", ex.message); return(RedirectToAction("EditSusbscriber/" + id)); } } else { ModelState.AddModelError("idnull", "Error while processing request contact administrator"); return(RedirectToAction("Index")); } }