MEF and DirectoryCatalog

Is there a way to safely use Directory开发者_如何学运维Catalog to handle if the directory doesn't exist?

Here a code example of how my container is setup:

    //Create an assembly catalog of the assemblies with exports
    var catalog = new AggregateCatalog(
        new AssemblyCatalog(Assembly.GetExecutingAssembly()),
        new AssemblyCatalog(Assembly.Load("My.Second.Assembly")),
        new DirectoryCatalog("Plugins", "*.dll"));

    //Create a composition container
    var container = new CompositionContainer(catalog);

But an exception is thrown if the directory doesn't exist, and I would like to ignore that error.

Apparently not if an exception is thrown. Just create the directory prior to running the MEF container setup and then no error will be thrown.

According to the documentation:

The path must be absolute or relative to AppDomain.BaseDirectory.

PsuedoCode to do a directory check:

    string path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Plugins");

    //Check the directory exists
    if (!Directory.Exists(path))
    {
        Directory.CreateDirectory(path);
    }

    //Create an assembly catalog of the assemblies with exports
    var catalog = new AggregateCatalog(
        new AssemblyCatalog(Assembly.GetExecutingAssembly()),
        new AssemblyCatalog(Assembly.Load("My.Other.Assembly")),
        new DirectoryCatalog(path, "*.dll"));

    //Create a composition container
    _container = new CompositionContainer(catalog);