public ActionResult RoleAdd(Role Role) { Session["RoleName"] = Role.Role_Name; if (ModelState.IsValid && irep.GetRole(Role.Role_Name).Role_Name == null) { if (irep.AddRole(Role.Role_Name)) { return(RedirectToAction("RoleAuthoritiesChoose")); } else { return(View()); } } else { ModelState.AddModelError("", "角色已经存在"); return(View()); } }