How can i prevent from MEF to load duplicates Modules in the case of the presence of 2 copies of the same Assembly (maybe by mistake)
Assembly1.dll
Assembly2.dll (copy of Assembly1)
[ImportMany]
public IList<IModule> Modules { get; private set; }
public void BuildUp()
{
Modules = new List<IModule>();
var catalog = new DirectoryCatalog(@".Modules");
var container = new CompositionContainer(catalog);
container.ComposeParts(this);
}
Instead of using a DirectoryCatalog, use an AggregateCatalog. You will have to write code that looks at all the Assemblies in the modules directory, figures out if the current one is a duplicate of one it has already processed, and if not, creates an AssemblyCatalog for that Assembly and adds it to the AggregateCatalog.
I m not sure exactly what logic you would be able to use to detect that two DLLs with different names are the "same" assembly, though.
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