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为什么我将引用的实体添加到上下文而不是附加的上下文中，保持不变？

[英]Why do I get referenced entities added to context instead of attached, unchanged?

原文 2012-01-11 15:44:14 0 1 .net/ entity-framework/ objectstatemanager

I have attached entities to a context with EntityState.Unchanged which will be referenced by a new entity I add later via DbContext<T>.Add() . 我已将实体附加到具有EntityState.Unchanged的上下文，该上下文将由稍后通过DbContext<T>.Add()添加的新实体引用。 The Add() adds the entity, but it also adds the other entities it references to the added collection in ObjectStateManager , despite the referenced ones being in the unchanged collection previously. Add()添加实体，但也会将它引用的其他实体添加到ObjectStateManager的已添加集合中，尽管之前引用的实体位于未更改的集合中。 Under the debugger I see the referenced entities in both collections. 在调试器下，我在两个集合中都看到了引用的实体。 So, I end up with inserts occurring on the referenced children entities when I don't want them to. 因此，当我不希望插入子实体时，我最终会在这些子实体上发生插入。

1 个解决方案

The previously attached entities were identical structurally, but they were different references. 先前连接的实体在结构上相同，但是它们是不同的参考。 EF seems to use ReferenceEquals under the covers. EF似乎在幕后使用ReferenceEquals 。

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