Hi,

I have an interface named IHarvester.

There are 3 implementations of that interface, each under their own namespace:

1. Google
2. Yahoo
3. Bing

A HarvesterManager uses the given harvester. It knows the interface and all 3 implementations.

I want some way of letting the class user say in which harvester it wants to use. And in the code select that implementation, without a switch-case implementation.

Can reflection save my day?

Here is the code bits:

// repeat for each harvester
namespace Harvester.Google
{
    public abstract class Fetcher : BaseHarvester, IInfoHarvester {...}
}


public enum HarvestingSource
{
    Google,
    Yahoo,
    Bing,
}
class HarvesterManager {
    public HarvestingSource PreferedSource {get;set;}
    public HarvestSomthing()
    {
        switch (PreferedSource) .... // awful...
    }
}

Thanks.

I will give my 2 cents of why I want to change this. There several people writing harvesters, I want them to focus only on building more harvesters, without ever needing to update the enum, or at worst, update only the enum.