public ActionResult DetailGrid(int?key) { if (key.HasValue) { var data = _Service.GetByKey(key.Value); ViewData["MasterForm"] = ReadViewHelper.PartialView(this, "_MasterForm", UserGroupBusiness.FromEntity(data)); return(PartialView("_DetailGrid", _Service.GetGroupUser(key.Value))); } else { //ViewData["MasterForm"] = ReadViewHelper.PartialView(this, "_MasterForm", new ViewModel.UserGroup.UserGroupModel()); return(PartialView("_DetailGrid", new List <Models.SystemUser>())); } }