Here's the code for my last post on Annotations - I tidied up a few things up (it's still very basic but it does work) there's a single test fixture to give you a guide for usage... so things like:

    [Test]

    public void QueryStoreForClassAnnotationsWithCertainKey()

    {

        ClassA target1 = new ClassA();

        ClassA target2 = new ClassA();

        ClassA target3 = new ClassA();

        target1.Annotate(Description => "class number 1");

        target2.Annotate(Description => "class number 2");

        target3.Annotate(Parsed => true);
        var results = AnnotationStore.Classes

            .Where(a => a.HasKey("Description"))

            .ToList();
        Assert.AreEqual(2, results.Count);

    }

And also the equivalent thing is possible for members... though I suspect annotating members isn't all that useful in most cases...

  [Test]

  public void QueryStoreForMemberAnnotations()

  {

      ClassA target1 = new ClassA();

      ClassA target2 = new ClassA();

      ClassA target3 = new ClassA();
      target1.Annotate(() => target1.FirstName,

          CamelCase => true); // annotating a property

      target1.Annotate(() => target1.Field,

          Ignored => true); // annotating a field

      target2.Annotate(() => target2.Execute(),

          Parsed => true); // annotating a method

      target3.Annotate(Parsed => true);
      var results = AnnotationStore.Members

          .Where(p => p.HasKey("CamelCase"))

          .ToList();
      Assert.AreEqual(1, results.Count);

  }