问题描述
我曾经在EF 4.0中使用ObjectSet，我可以使用
i used to use the ObjectSet in EF 4.0, I could get the underlying Context for this ObjectSet using
myObjectSet.Context会返回ObjectContext.
现在在Ef4.1中带有DbSet，等效是什么?
Now with DbSet in Ef4.1, what is the equivalent ??
推荐答案
EF 4.1不提供公共API从DbSet实例获取DbContext.您将必须使用Reflections API来获取DbContext实例.
EF 4.1 does not offer a public API to get the DbContext from the DbSet instance. You would have to use Reflections API to get the DbContext instance.
修改
一种解决方法是将DbContext实例与DbSet实例一起传递.例如，如果您有一个仅接受DbSet实例的构造函数.还要通过DbContext实例.
One workaround would be to pass around the DbContext instace with DbSet instance.Eg if you had a constructor that took only a DbSet instance. Pass the DbContext instace also.
public MyService(DbContext context, DbSet<MyClass> mySet){}
其他方法是在 Reflector 内打开EntityFramewrk.dll，然后了解如何获取DbSet的内部/私有字段来实例化c5>.我不建议您使用此功能，因为实现方式可能会发生变化.
Other method would be to open up the EntityFramewrk.dll inside Reflector and find out how to get the DbContext instace by accessing the internal/private fields of DbSet. I wouldn't advice you to use this because implementations can change.
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