class Test : System.Dynamic.DynamicObject
        {
            public override bool TryGetMember(System.Dynamic.GetMemberBinder binder, out object result)
            {
                if (map != null)
                {
                    string name = binder.Name;
                    object value;
                    if (map.TryGetValue(name, out value))
                    {
                        result = value;
                        return true;
                    }
                }
                return base.TryGetMember(binder, out result);
            }

            System.Collections.Generic.Dictionary<string, object> map;

            public override bool TryInvokeMember(System.Dynamic.InvokeMemberBinder binder, object[] args, out object result)
            {
                if (binder.Name == "set" && binder.CallInfo.ArgumentCount == 2)
                {
                    string name = args[0] as string;
                    if (name == null)
                    {
                        //throw new ArgumentException("name");
                        result = null;
                        return false;
                    }
                    if (map == null)
                    {
                        map = new System.Collections.Generic.Dictionary<string, object>();
                    }
                    object value = args[1];
                    map.Add(name, value);
                    result = value;
                    return true;

                }
                return base.TryInvokeMember(binder, args, out result);
            }
        }
        static void Main(string[] args)
        {
            dynamic t = new Test();
            string @a = "gg";
            t.set(@a,"galrj");
            Console.WriteLine(t.gg);
        }