public ContentResult RemoteUserCheckExist(string userName) { IPropertyUserBLL propertyUserBll = BLLFactory <IPropertyUserBLL> .GetBLL("PropertyUserBLL"); // 用户名已存在 if (propertyUserBll.Exist(m => m.UserName == userName && m.DelFlag == ConstantParam.DEL_FLAG_DEFAULT)) { // 校验不通过 return(Content("false")); } else { return(Content("true")); } }