ajax传值到ashx接收反序列

        //jsonData  格式
        //     [{"PersonID":1,"Name":"Bryon Hetrick","Registered":true},
        //     {"PersonID":4,"Name":"Nora Osborn","Registered":false}]       
//ajax传值到ashx
   var josnData = JSON.stringify(data);
                var option = {
                    url: 'SetData.ashx',
                    type: 'POST',
                    data: { data: josnData },
                    dataType: 'html',
                    success: function (result) { alert(result); }
                };
                $.ajax(option);
//ashx接收反序列
   context.Response.ContentType = "text/plain";
        var jsonData = context.Request["data"];
        var serializer = new JavaScriptSerializer();
        var deserializedResult = serializer.Deserialize<List<M_TantouGroup>>(jsonData);