c# - MEF doesn't discover exports in assembly loaded from byte[] -

i trying use mef application accepts plugins loaded database. when try creating new assemblycatalog , pass in dynamically created assembly, mef appears unable discover exports.

assembly = assembly.load(new assemblymover().getassemblybytes("plugin1")); assemblycatalog c = new assemblycatalog(a); 

assemblycatalog doesn't contain parts (but should).

if move exportable class current assembly run following:

assemblycatalog c = new assemblycatalog(assembly.getexecutingassembly()); 

mef discovers part fine (which assume).

the interface defined in shared assembly:

public interface iplugin {     string name { get; } } 

the assembly plugin1 has single class:

[export(typeof(iplugin))] public class testplugin1 : iplugin {     public string name     {         { return "plugin1"; }     } } 

i thought mef used reflection discover parts, verified assembly loaded correctly , contained class testplugin1.

foreach (type t in a.gettypes())         {             messagebox.show(t.name);         } 

any thoughts?