无法将方法从ajax方法重定向到aspx.cs页面

Question

我在CenterDetail.aspx页面中有以下代码

function myFunction(id) {
    console.log(2);
    var myindex = window.ContentPlaceHolder1_ddCountryId.selectedIndex;
    console.log(myindex);
    var selectedName = window.ContentPlaceHolder1_ddCountryId.options[myindex].text;
    console.log(selectedName);
    var loc = window.location.href;
    console.log(loc);

    $.ajax({
        type: "POST",
        url: loc + "/BindState",
        data: { id : id },
        async: false,
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (data) {
            console.log(data);
        }
    });
}

以下方法在我的代码后面。

 [WebMethod]
    public static string BindState(int id)
    {
        var states = new StateProvinceCollection().Where(StateProvince.Columns.CountryId = Convert.ToString(id), true).ToList();

        string tag = "<select id='StateProvinceId' name='StateProvinceName'>";
        tag += "<option value=''>select</option>";
        foreach (var item in states)
        {
            tag += "<option value='" + item.StateProvinceId + "'>" + item.StateProvinceName + "</option>";
        }
        tag += "</select>";
        return tag;
    }

一切仍然显示http://musicclass/Account/Management/Center/CenterDetail.aspx/BindState 404未找到错误。