flex webserver .net

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
<fx:Script>
<!--[CDATA[
import mx.rpc.events.ResultEvent;
/* import mx.rpc.events.FaultEvent;
import mx.rpc.events.ResultEvent;
internal function onRequest():void
{
websevercalc.Calu.send();
}
internal function onSuccess(evt:ResultEvent):void
{
this.result.text =evt.result.toString();
}
internal function onFualt(evt:FaultEvent):void
{

} */
private function fnText(event:ResultEvent):void
{
this.result.text = event.result.toString();
}
]]-->
</fx:Script>
<fx:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处 -->
<s:WebService id="websevercalc" wsdl="http://localhost:1524/WebService1.asmx?wsdl" useProxy="false" >
<s:operation name="Calu" result="fnText(event)" >
<s:request >
<r>
{this.txt.text}
</r>
</s:request>
</s:operation>
</s:WebService>
</fx:Declarations>
<s:Label x="287" y="111" id="result" />
<s:Button x="209" y="111" label="圆周长" click="websevercalc.Calu.send() "/>
<s:TextInput x="73" y="111" id="txt"/>
</s:Application>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
namespace HzBsTest
{
/// <summary>
/// WebService1 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
// [System.Web.Script.Services.ScriptService]
public class WebServ