Question

I have a project contains many references.
I need to find all the types that implement IMyInterface interface.

I tried AppDomain.CurrentDomain.GetAssemblies().SelectMany(x => x.GetTypes()) but it didn’t returned all the types in the references.

How do I do that?

Answer 1

I guess the problem might be that some of your referenced assemblies are not currently loaded. You can get all referenced assemblies with GetReferencedAssemblies – but this will only yield the names.

If you want you can go on and load the assemblies with Assembly.Load and inspect them further.

So a possible snippet should be

    var types =
        System.Reflection.Assembly.GetExecutingAssembly()
            .GetReferencedAssemblies()
            .SelectMany(name => Assembly.Load(name).GetTypes())
            .Union(AppDomain.CurrentDomain.GetAssemblies().SelectMany(a => a.GetTypes()));

to search for the types implementing your interface:

    var withInterfaces =
        types.Where(t => t.GetInterfaces().Any(i => i == typeof(IDisposable)));

If this does not the trick I’m lost as well…