错误代码

   public bool addSubOptionItem(csModel.cs_Answer answers)       {           bool result = false;           wpe = new csWeiPlatformEntities();//实例化entity对象           try           {               wpe.CreateObjectSet<cs_Answer>().AddObject(answers);               wpe.SaveChanges();               result = true;           }           catch (Exception)           {               result = false;           }           //wpe.Detach(answers);           return result;       }