<form action="/library/test" method="POST"><input id="Name" name="Name" type="text" value=""><input id="Id" name="Id" type="text" value=""><input type="submit" value="Save" />
</form>

       [HttpPost]public ActionResult Test(FormCollection fc){            Person person=new Person(){Id = fc["Id"], Name = fc["Name"]};return Json(person.Id+" "+person.Name, JsonRequestBehavior.AllowGet);}

 [HttpPost]public ActionResult Test(Person person){return Json(person.Id+" "+person.Name, JsonRequestBehavior.AllowGet);}

    public class PersonModelBinder : IModelBinder{public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext){IValueProvider provider = bindingContext.ValueProvider;return new Person{Id = provider.GetValue("Name").AttemptedValue,   //本例中将位于valueProvider请求的数据中key为Name的值赋给IdName = provider.GetValue("Id").AttemptedValue};}}

    public class PersonBinderAttribute : CustomModelBinderAttribute{public override IModelBinder GetBinder(){return new PersonModelBinder();}}

       [HttpPost]public ActionResult Test([PersonBinder]Person person){// AddIntoDb(person);return Json(person.Id+" "+person.Name, JsonRequestBehavior.AllowGet);}

<script type="text/javascript">$(function () {var person = new Object();person.Id = "112233";person.Name = "Benjamin";var personStr=JSON.stringify(person);   //使用json2.js的序列化方法$.ajax({url: window.UrlContent("/Library/Test?tick=" + Math.random()),data: { personStr: personStr },type: "POST",success: function (result) {}});});
</script>

 public ActionResult Test(string personStr){Person person=JsonConvert.DeserializeObject<Person>(personStr);return Json(person.Id+" "+person.Name, JsonRequestBehavior.AllowGet);}