public Tuple<string,OracleParameter[]> StuParam(EntTest model)
        {
            string sql = string.Empty;
            OracleParameter [] param=new OracleParameter[model.GetType().GetProperties().Count()];
            int index = 0;
            if (!string.IsNullOrEmpty(model.Id.ToString()))
            {
                //sql += string.Format(" id=:{0}, ", EntTest.DB_ID);
                param[index] = new OracleParameter(":" + EntTest.DB_ID, model.Id);
                index++;
            }
            if (!string.IsNullOrEmpty(model.Name))
            {
                sql += string.Format("name=:{0},",EntTest.DB_NAME);
                param[index] = new OracleParameter(":"+EntTest.DB_NAME,model.Name);
                index++;
            }
            if (!string.IsNullOrEmpty(model.Age.ToString()))
            {
                sql += string.Format("age=:{0},",EntTest.DB_AGE);
                param[index] = new OracleParameter(":"+EntTest.DB_AGE,model.Age);
                index++;
            }
            if (!string.IsNullOrEmpty(model.Sex))
            {
                sql += string.Format("sex=:{0},",EntTest.DB_SEX);
                param[index] = new OracleParameter(":"+EntTest.DB_SEX,model.Sex);
                index++;
            }
            if (!string.IsNullOrEmpty(model.Address))
            {
                sql += string.Format("address=:{0},",EntTest.DB_ADDRESS);
                param[index] = new OracleParameter(":"+EntTest.DB_ADDRESS, model.Sex);
                index++;
            }
            if (!string.IsNullOrEmpty(model.Hobby))
            {
                sql += string.Format("hobby=:{0},",EntTest.DB_HOBBY);
                param[index] = new OracleParameter(":"+EntTest.DB_HOBBY, model.Hobby);
                index++;
            }
            if (!string.IsNullOrEmpty(model.Class))
            {
                sql += string.Format("class=:{0},",EntTest.DB_CLASS);
                param[index] = new OracleParameter(":"+EntTest.DB_CLASS, model.Class);
                index++;
            }
            if (!string.IsNullOrEmpty(model.UpdateTime.ToString()))
            {
                sql += string.Format("update_time=:{0},",EntTest.DB_UPDATE_TIME);
                param[index] = new OracleParameter(":"+EntTest.DB_UPDATE_TIME, model.UpdateTime);
                index++;
            }
            if (!string.IsNullOrEmpty(model.UpdateUser))
            {
                sql += string.Format("update_user=:{0},", EntTest.DB_UPDATE_USER);
                param[index] = new OracleParameter(":" + EntTest.DB_UPDATE_USER, model.UpdateUser);
                index++;
            }
            if (!string.IsNullOrEmpty(model.CreateTime.ToString()))
            {
                sql += string.Format("create_time=:{0},", EntTest.DB_CREATE_TIME);
                param[index] = new OracleParameter(":" + EntTest.DB_CREATE_TIME, model.CreateTime);
                index++;
            }
            if (!string.IsNullOrEmpty(model.CreateUser))
            {
                sql += string.Format("create_user=:{0},", EntTest.DB_CREATE_USER);
                param[index] = new OracleParameter(":" + EntTest.DB_CREATE_USER, model.CreateUser);
                index++;
            }
            sql=sql.Remove(sql.LastIndexOf(","),1);
            
            //OracleParameter[] s=param.ToArray<OracleParameter>().Select()(p=>p!=null);
            return new Tuple<string,OracleParameter[]>(sql,param);
        }