How do I get a Json Object to be read as an integer

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C#

ASP.NET

MVC

JSON

I can not get the json1 to read { "id":1 } for an Integer instead it reads { "id":"1" } and can not be read as an integer in the [HttpPost].

How do I get a Json Object to be read as an integer?

script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript">
    $(function () {
        $("#btn1").click(function () {
            var id1 = $("#text1").val();
            var url1 = "/Home/function1";
            var data1 = { "id":id1 };
            var json1 = JSON.stringify(data1);
            $("#jsondata").val(json1);
            $.post(url1, json1, function (data) {
                alert("success");
            },"json");
                $("#id").val(data[0].Id);
                $("#col1").val(data[0].col1);
                $("#col2").val(data[0].col2);
                $("#col3").val(data[0].col3);
        });
</script>

[HttpPost]
        public JsonResult function1(int id)
        {
            List<Table1> the1 = new List<Table1>();
            string connStr = ConfigurationManager.ConnectionStrings["conndb"].ConnectionString;
            string cmdStr = "SELECT * FROM [Table1] WHERE [Id]=@Id;";
            SqlDataReader dr = null;
            using (SqlConnection conn = new SqlConnection(connStr))
            {
                conn.Open();
                using (SqlCommand cmd = new SqlCommand(cmdStr, conn))
                {
                    cmd.Parameters.AddWithValue("@Id", id);
                    cmd.ExecuteNonQuery();
                    using (dr = cmd.ExecuteReader())
                    {
                        while (dr.Read())
                        {
                            the1.Add(new Table1 { Id = Convert.ToInt32(dr["Id"]), col1 = dr["col1"].ToString(), col2 = dr["col2"].ToString(), col3 = dr["col3"].ToString() });
                        }
                    }
                }
            }
            return Json(the1, JsonRequestBehavior.AllowGet);
        }