问题 如何将字典作为参数从jQuery / Ajax传递给ActionResult方法？

最后我发现了!!感谢大家的建议！我终于找到了最好的解决方案是通过Http Post传递JSON并使用自定义ModelBinder将JSON转换为Dictionary。我在我的解决方案中做的一件事是创建一个继承自Dictionary的JsonDictionary对象，这样我就可以将自定义ModelBinder附加到JsonDictionary类型，如果我稍后使用Dictionary作为ActionResult参数，它将来不会引起任何冲突与JSON不同的目的。

这是最终的ActionResult方法：

public ActionResult AddItems([Bind(Include="values")] JsonDictionary values)
{
    // do something
}

和jQuery“$ .post”调用：

$.post("/Controller/AddItems",
{
    values: Sys.Serialization.JavaScriptSerializer.serialize(
            {
                id: 200,
                "name": "Chris"
            }
        )
},
function(data) { },
"json");

然后需要注册JsonDictionaryModelBinder，我将它添加到Global.asax.cs中的Application_Start方法：

protected void Application_Start()
{
    ModelBinders.Binders.Add(typeof(JsonDictionary), new JsonDictionaryModelBinder());
}

最后，这里是我创建的JsonDictionaryModelBinder对象和JsonDictionary对象：

public class JsonDictionary : Dictionary<string, object>
{
    public JsonDictionary() { }

    public void Add(JsonDictionary jsonDictionary)
    {
        if (jsonDictionary != null)
        {
            foreach (var k in jsonDictionary.Keys)
            {
                this.Add(k, jsonDictionary[k]);
            }
        }
    }
}

public class JsonDictionaryModelBinder : IModelBinder
{
    #region IModelBinder Members

    public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
    {
        if (bindingContext.Model == null) { bindingContext.Model = new JsonDictionary(); }
        var model = bindingContext.Model as JsonDictionary;

        if (bindingContext.ModelType == typeof(JsonDictionary))
        {
            // Deserialize each form/querystring item specified in the "includeProperties"
            // parameter that was passed to the "UpdateModel" method call

            // Check/Add Form Collection
            this.addRequestValues(
                model,
                controllerContext.RequestContext.HttpContext.Request.Form,
                controllerContext, bindingContext);

            // Check/Add QueryString Collection
            this.addRequestValues(
                model,
                controllerContext.RequestContext.HttpContext.Request.QueryString,
                controllerContext, bindingContext);
        }

        return model;
    }

    #endregion

    private void addRequestValues(JsonDictionary model, NameValueCollection nameValueCollection, ControllerContext controllerContext, ModelBindingContext bindingContext)
    {
        foreach (string key in nameValueCollection.Keys)
        {
            if (bindingContext.PropertyFilter(key))
            {
                var jsonText = nameValueCollection[key];
                var newModel = deserializeJson(jsonText);
                // Add the new JSON key/value pairs to the Model
                model.Add(newModel);
            }
        }
    }

    private JsonDictionary deserializeJson(string json)
    {
        // Must Reference "System.Web.Extensions" in order to use the JavaScriptSerializer
        var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
        return serializer.Deserialize<JsonDictionary>(json);
    }
}