如何从Entity对象获取对上级对象的引用 [英] How to get a reference to superior object from Entity object

问题描述

如何从EntityObject类获取对ObjectContext的引用？

How to get a reference to superior ObjectContext from EntityObject class?

推荐答案

只有通过使用关系的黑客和不分离的实体，才能做到这一点。见下文。

Only way you can do it is via a hack using relationships, and an entity that is not detached. See below.

  YourEntity someEntity = null;

  RelationshipManager relationshipManager = ((IEntityWithRelationships)someEntity ).RelationshipManager;

  IRelatedEnd relatedEnd = relationshipManager.GetAllRelatedEnds().FirstOrDefault();

  ObjectQuery getContext = relatedEnd.CreateSourceQuery() as ObjectQuery;

  YoutObjectContext c1 = (YourObjectContext)getContext .Context;

祝你好运。如果您使用上面的代码，我建议使用空检查保护它。

Good luck with it. If you use the code above i recommend protecting it with null checks.

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