using System.Dynamic;
using System.Linq.Expressions;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            dynamic expando = new T();
            expando.a = 1;
        }
        public class T : IDynamicMetaObjectProvider
        {
            dynamic _context = new D();
            int c = 0;
            public DynamicMetaObject GetMetaObject(Expression parameter)
            {
                c++;
                return (_context as D).GetMetaObject(parameter);
            }

            public class D : DynamicObject
            {

            }
        }
    }
}