Multiple Properties and Methods using MEF

Question

I am trying to implment a plugin framework using MEF and I have an interface

public interface IPlugin
{
   string SomeProperty {get;set;}
   IList<string> DoSomething(string somevalue);
}

I was thinking of doing an implementation which does Import Many

public class MainContainer : IPlugin
{
    public string _name;

    public MainContianer(){

    }
    public MainContainer(string name){
       _name = name;
    }

    [ImportMany]
    List<Lazy<IPlugin, string>> plugins;

    string SomeProperty { get { 
       var plugin  = plugins.Where(a => a.Metadata.Equals(_name)).FirstOrDefault();
            if (plugin  != null) {
                return plugin.Value.SomeProperty;
            }
            throw new CustomException();
    } }

    List<string> DoSomething(string value){
        var plugin  = plugins.Where(a => a.Metadata.Equals(_name)).FirstOrDefault();
            if (plugin  != null) {
                return plugin.Value.DoSomething(value);
            }
            throw new CustomException();
    }
}

My Question is that Is there a better way to the implement this rather then me writing the same block for each property and method.

var plugin  = plugins.Where(a => a.Metadata.Equals(_name)).FirstOrDefault();
if (plugin  != null) {
   return plugin.Value.xxx
}

Answer 1

I was looking at all wrong. I have updated my code, the Calculator Example pushed me in the wrong direction.

public class MainContainer
{
    private CompositionContainer _container;

    [ImportMany]
    public IEnumerable<IPlugin> Plugins;

    public AdapterProvider(string pluginpath)
    {
        var catalog = new AggregateCatalog();
        catalog.Catalogs.Add(new DirectoryCatalog(pluginpath));
        _container = new CompositionContainer(catalog);
        _container.ComposeParts(this);
    }
}

is enough,

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