Question

尽管我相信,它不附属于它,而且与另一个不同背景没有关系,但我还是没有加入反对。

I am using EF 4 with POCO objects.

如果是我,

_currentContext.ObjectStateManager.GetObjectStateEntry(entityIn)

然后,我发现错误。

The ObjectStateManager does not contain an ObjectStateEntry with a reference to an object of type  System.Data.Entity.DynamicProxies.OrderItem_7D361CB49D75AA90681B4BA3F924139ECB0FC1426E38E90C7B884A4E9CD777DF .

做得不够。因此,如果我试图随函附上它的话。

_currentContext.AttachTo("OrderItems", entityIn)

Then I get

An entity object cannot be referenced by multiple instances of IEntityChangeTracker.

我怎么会发现这两个错误。难道他们不矛盾吗? 我如何看待这个问题?

<><>Edit>/strong>

There is only one context throughout the app. The pattern is

All calls through repository objects.
The objects get their objectcontext from a factory class.
This factory class either creates a context or gets the context from the request object thus guaranteeing only one context is used for the page lifecycle

无论在什么时候,如果你对情况作两场即时表示反对,则每一方的散射代码相同。

Answer 1

标题在中,可能提及另一个情况下的物体。

However, the real problem here is that you have multiple contexts in scope at all. It is hard to do that right. In a web application, you should have one context per request, period.

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