public ActionResult New(SiteNewModel model) { if (ModelState.IsValid) { if (!SiteModel.NewSite(new Sites() { domain = model.domain, name = model.name })) { ModelState.AddModelError("", "域名已经存在。"); } else { ViewBag.Message = "添加站点成功。"; Model.ScriptRedirect(ViewBag, Url.Action("Index", "Site")); } } return(View()); }