通过 JSON 将对象数组发布到 ASP.Net MVC3

I'm looking for a solution to POSTing an array of objects to MVC3 via JSON.

Example code I'm working off of: http://weblogs.asp.net/scottgu/archive/2010/07/27/introducing-asp-net-mvc-3-preview-1.aspx

JS:

var data = { ItemList: [ {Str: 'hi', Enabled: true} ], X: 1, Y: 2 };

$.ajax({
    url: '/list/save',
    data: JSON.stringify(data),
    success: success,
    error: error,
    type: 'POST',
    contentType: 'application/json, charset=utf-8',
    dataType: 'json'
});

ListViewModel.cs:

public class ListViewModel
{
    public List<ItemViewModel> ItemList { get; set; }
    public float X { get; set; }
    public float Y { get; set; }
}

ItemViewModel.cs:

public class ItemViewModel
{
    public string Str;   // originally posted with: { get; set; }
    public bool Enabled; // originally posted with: { get; set; }
}

ListController.反恐精英:

public ActionResult Save(ListViewModel list)
{
    // Do something
}

The result of this POST:

列表设置为ListViewModel
设置其X和Y属性
基础ItemList属性已设置
ItemList包含一个项目，因为它应该
该ItemList中的项未初始化.字符串为空，启用为假.

换句话说，这是我从MVC3的模型绑定中得到的:

list.X == 1
list.Y == 2
list.ItemList != null
list.ItemList.Count == 1
list.ItemList[0] != null
list.ItemList[0].Str == null

It would appear the MVC3 JsonValueProvider is not working for complex objects. How do I get this to work? Do I need to modify the existing MVC3 JsonValueProvider and fix it? If so, how do I get at it and replace it in an MVC3 project?

我已经追问过的相关问题都无济于事:

Asp.net Mvc Ajax Json (post Array) Uses MVC2 and older form-based encoding - that approach fails with an object that contains an array of objects (JQuery fails to encode it properly).

Post an array of complex objects with JSON, JQuery to ASP.NET MVC Controller Uses a hack I'd like to avoid where the Controller instead receives a plain string which it then manually deserializes itself, rather than leveraging the framework.

MVC3 RC2 JSON Post Binding not working correctly

How to post an array of complex objects with JSON, jQuery to ASP.NET MVC Controller? This poor guy had to write a JsonFilter just to parse an array. Another hack I'd prefer to avoid.

So, how do I make this happen?