Controller

SmartAction.cs

    public static class UrlHelperExtensions
    {
		public static string SmartAction(this UrlHelper url, object values)
		{
			return SmartAction(url, null, values);
		}

		public static string SmartAction(this UrlHelper url, RouteValueDictionary valueCollection)
		{
			return SmartAction(url, null, valueCollection);
		}

		public static string SmartAction(this UrlHelper url, string actionName, object values)
        {
            return SmartAction(url, actionName, null, new RouteValueDictionary(values));
        }

		public static string SmartAction(this UrlHelper url, string actionName, RouteValueDictionary valueCollection)
		{
			return SmartAction(url, actionName, null, valueCollection);
		}

        public static string SmartAction(this UrlHelper url, string actionName, string controllerName, object values)
        {
            return SmartAction(url, actionName, controllerName, new RouteValueDictionary(values));
        }

        public static string SmartAction(this UrlHelper url, string actionName, string controllerName, RouteValueDictionary valueCollection)
        {
            var resultingCollection = new RouteValueDictionary();
            foreach (var pair in valueCollection)
            {
                var value = pair.Value;
				var type = value == null ? null : value.GetType();
                if (value != null && (type.IsArray || type.IsAssignableFrom(typeof(IEnumerable))))
                {
                    var i = 0;
                    foreach (var v in (IEnumerable)value)
                    {
                        resultingCollection.Add(pair.Key + "[" + i + "]", v);
                        i++;
                    }
                }
				else if (value != null && type.IsClass && type != typeof(string))
				{
					foreach (PropertyDescriptor property in TypeDescriptor.GetProperties(value))
					{
						resultingCollection.Add(pair.Key + "." + property.Name, property.GetValue(value));
					}
				}
				else
				{
					resultingCollection.Add(pair.Key, pair.Value);
				}
            }
            return url.Action(actionName, controllerName, resultingCollection);
        }
    }

SmartController.cs

	public class SmartController : Controller
	{
		protected override IActionInvoker CreateActionInvoker()
		{
			return new SmartControllerActionInvoker();
		}
	}

	public class SmartControllerActionInvoker : ControllerActionInvoker
	{
		protected override ActionResult CreateActionResult(ControllerContext controllerContext, ActionDescriptor actionDescriptor, object actionReturnValue)
		{
			if (actionReturnValue == null) return new EmptyResult();
			return (actionReturnValue as ActionResult) ?? new JsonResult { Data = actionReturnValue, JsonRequestBehavior = JsonRequestBehavior.AllowGet };
		}
	}