How do I dynamically load raw assemblies that contains unmanaged code?(bypassing 'Unverifiable code failed policy check' exception)

Question

I'm going to give an example of using System.Data.SQLite.DLL which is a mixed assembly with unmanaged code: If I execute this :

  var assembly= Assembly.LoadFrom("System.Data.SQLite.DLL")

No exceptions are thrown, but if I do this :

  var rawAssembly = File.ReadAllBytes("System.Data.SQLite.DLL");
  var assembly = Assembly.Load(rawAssembly);

The CLR throws a FileLoadException with "Unverifiable code failed policy check. (Exception from HRESULT: 0x80131402)". Let's say I'm trying to load this assembly on a child AppDomain, how can I customize the AppDomain's security to allow me pass the policy check?

Answer 1

We are the victim of a crummy exception message. Loading assemblies with Assembly.Load(byte[]) that contain unmanaged code in not supported. This is the subject of this feedback item.