ajax 调用webservice的简单例子
webservice
<%@ WebService Language="C#" Class="Samples.AspNet.SimpleWebService" %>
using System;
using System.Web;
using System.Web.Services;
using System.Xml;
using System.Web.Services.Protocols;
using System.Web.Script.Services;
namespace Samples.AspNet
{
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
public class SimpleWebService : System.Web.Services.WebService
{
[WebMethod]
public string EchoInput(String input)
{
string inputString = Server.HtmlEncode(input);
if (!String.IsNullOrEmpty(inputString))
{
return String.Format("You entered {0}. The "
+ "current time is {1}.", inputString, DateTime.Now);
}
else
{
return "The input string was null or empty.";
}
}
}
}
sample.aspx
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<style type="text/css">
body { font: 11pt Trebuchet MS;
font-color: #000000;
padding-top: 72px;
text-align: center }
.text { font: 8pt Trebuchet MS }
</style>
<title>Simple Web Service</title>
<script type="text/javascript">
// This function calls the Web Service method.
function EchoUserInput()
{
var echoElem = document.getElementById("EnteredValue");
Samples.AspNet.SimpleWebService.EchoInput(echoElem.value,
SucceededCallback);
}
// This is the callback function that
// processes the Web Service return value.
function SucceededCallback(result)
{
var RsltElem = document.getElementById("Results");
RsltElem.innerHTML = result;
}
</script>
</head>
<body>
<form id="Form1" runat="server">
<asp:ScriptManager runat="server" ID="scriptManager">
<Services>
<asp:ServiceReference path="SimpleWebService.asmx" />
</Services>
</asp:ScriptManager>
<div>
<h2>Simple Web Service</h2>
<p>Calling a simple service that echoes the user's input and
returns the current server time.</p>
<input id="EnteredValue" type="text" />
<input id="EchoButton" type="button"
value="Echo" onclick="EchoUserInput()" />
</div>
</form>
<hr/>
<div>
<span id="Results"></span>
</div>
</body>
</html>
