问如何用Umbraco编写web服务？

EN

<form id="AbniyehMainForm" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true"
            EnablePageMethods="true" ScriptMode="Auto">
            <Services>
                <asp:ServiceReference Path="~/Services/ApplicationFormService.asmx" />
            </Services>
            <Scripts>
                <asp:ScriptReference Path="/scripts/building.js" />
            </Scripts>
        </asp:ScriptManager>
</form>

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 
[System.Web.Script.Services.ScriptService]
public class ApplicationFormService : System.Web.Services.WebService
{
    [WebMethod]
    [ScriptMethod(UseHttpGet = true)]
    public string HelloWorld()
    {
        return "Hello World";
    }
}

[WebMethod]
    [System.Web.Script.Services.ScriptMethod(UseHttpGet = true)]
    public static void HelloWorld()
    {
        ApplicationFormService s = new ApplicationFormService();
        s.HelloWorld();
    }

<%@ Import Namespace="System.Web.Services" %>
<%@ Import Namespace="Defraz.Building.WebApp.Services" %>

<script runat="server" type="text/C#" language="c#">
[WebMethod]
[System.Web.Script.Services.ScriptMethod()]
public static string HelloWorld()
{
    return "HelloWorld!!!";
}
</script>

function btnSendApplicationForm_onclick() {
     PageMethods.HelloWorld(_onMethodComplete, _onMethodError);
}

function _onMethodComplete(result) {
    alert(result.message);
}

function _onMethodError(result) {
    alert(result._message);
}