dynamic

gistfile1.txt

    public static class DynamicExt
    {
        public static Dictionary<object, DynamicObject> registry = new Dictionary<object, DynamicObject>();
        public static dynamic AsDynamic(this object source)
        {
            if (!registry.ContainsKey(source))
                registry[source] = new DynamicObject(source);
            return registry[source];
        }
    }
    public class DynamicObject : System.Dynamic.IDynamicMetaObjectProvider
    {
        object original;

        protected System.Dynamic.ExpandoObject expandoObject = new System.Dynamic.ExpandoObject();
        public DynamicObject(object original)
        {
            this.original = original;
        }
        public System.Dynamic.DynamicMetaObject GetMetaObject(System.Linq.Expressions.Expression parameter)
        {
            return (expandoObject as System.Dynamic.IDynamicMetaObjectProvider).GetMetaObject(parameter);
        }
    }

    [TestFixture]
    public class DynamicExtTests
    {
        [Test]
        public void CanOverRideReverse()
        {
            string test = "1234";
            test.AsDynamic().Reverse = (Func<string, string>)((s) => "tricked you");
            var actual = test.AsDynamic().Reverse();
            Assert.AreEqual("tricked you", actual);
        }
    }