Question

Using reflection (i’m guessing?), is it possible to create a method that will return a collection of all objects that inherit from an interface named IBlahblah?

public interface IBlahblah;

Answer 1

Assuming you have an assembly (or a list of assemblies) to look in, you can get a collection of types which implement an interface:

var blahs = assembly.GetTypes()
                    .Where(t => typeof(IBlahblah).IsAssignableFrom(t));

You can’t get a collection of “live objects” implementing the interface though – at least not without using the debugging/profiling API or something similar.