public class JsonBinderAttribute : CustomModelBinderAttribute
    {
        public override IModelBinder GetBinder()
        {
            return new JsonModelBinder();
        }

        public class JsonModelBinder : IModelBinder
        {
            public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
            {
                try
                {
                    if (controllerContext == null)
                        throw new ArgumentNullException("controllerContext");
                    if (bindingContext == null)
                        throw new ArgumentNullException("bindingContext");

                    //object obj2 = Activator.CreateInstance(bindingContext.ModelType);
                    Type genericType = new System.Web.Script.Serialization.JavaScriptSerializer().GetType();
                    Type repositoryType = genericType;
                    object repository = Activator.CreateInstance(repositoryType);

                    System.Reflection.MethodInfo genericMethod = repositoryType.GetMethod("Deserialize");
                    System.Reflection.MethodInfo closedMethod = genericMethod.MakeGenericMethod(bindingContext.ModelType);
                    return closedMethod.Invoke(repository, new[] { HttpContext.Current.Request[bindingContext.ModelName] });
                }
                catch
                {
                    return null;
                }
            }
        }
    }