ajax调用

var chemicalsModel = { Chemicals: tableData, Id: id };
            var jsonData = JSON.stringify(chemicalsModel);
            $.ajax
            ({
                traditional: true,
                type: "POST",
                url: "/DataManage/SaveChemicals",
                data: jsonData,
                dataType: "json",
                contentType: "application/x-www-form-urlencoded; charset=UTF-8",
                success: function (data) {
                    $("#loading-div").hide();
                    $(".loading-img").hide();
                    if (data.message == "success") {
                        alert("保存成功");
                    }
                    else {
                        alert(data.message);
                    }
                }
            });

 [HttpPost]
        public ActionResult SaveChemicals()
        {
            var stream = HttpContext.Request.InputStream;
            string json = new StreamReader(stream).ReadToEnd();
            System.Web.Script.Serialization.JavaScriptSerializer js = new System.Web.Script.Serialization.JavaScriptSerializer();
            ChemicalsModel chemicalsModel = js.Deserialize<ChemicalsModel>(json);
            
            return Json(new { message = "success" });
        }

 <form action="" method="post"  name="form1" id="myform">
<input type="hidden" id="hiddenval" name="hiddenval" value="" />
        <input type="hidden" id="hiddenids" name="hiddenids" value="" />
    </form>

 public ActionResult SetColumn(string id = "", string hiddenval = "", string hiddenids = "",string url="")
        {
}