Scenario: I query for a record in a database using linq to entities. So I open a data context, do my linq query, and pass the returned object off to my business logic layer / presentation layer.
项目从介绍层得到更新,并发生了一场节日活动,我把实体转回弹片。
在我的奖章中,我不得不打开一个新的背景,对我想要更新的物体进行lin问,利用我通过的实体更新归还的记录,然后是“SaveChanges()”。
我这样做了吗? 如果我使用ADO I,似乎只需要提供2个数据库,即初步选择和更新。 现在我不得不做3次电话(2次选择,1次更新)? 种子效率低下。 评论? 我希望它们在今后版本中能够改进,因为这可能是业绩高估的一大缺陷。
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