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Editorial Team
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Asked: 2026-05-22T01:27:46+00:00

I remember reading briefly that you can add assembly attributes so that you can

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I remember reading briefly that you can add assembly attributes so that you can only allow specific assemblies to call into an assembly. But I can’t remember where I saw that or how to do it – can someone point me in the right direction?

Just to be clear, this question is asking:

  1. I have assembly A and assembly B.
  2. Assembly B needs to access some member(s) within assembly A.
  3. Both assemblies will be sent to others in the form of a software product.
  4. I only want assembly B to be able to see the members in assembly A.
  5. Anyone who needs to use something in assembly A will have to do so via assembly B. Assembly A’s members are all hidden/internal so 3rd parties can not see them.
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1 Answer

  1. Editorial Team

    You can use the InternalsVisibleTo Attribute to allow assemblies referencing your assembly to see classes and members marked as internal. I believe there is no way to prevent an assembly to reference your assembly and access all public classes and members.

    Note: using reflection, any assembly can access any class or member, regardless of whether that is public or internal (or private), provided the application is running with Full Trust (which is usually the case).

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