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jquery異步調(diào)用頁面后臺方法‏(asp.net)

 更新時間:2011年03月01日 23:52:54   作者:  
給出了兩個簡單的例子,無參數(shù)的和有參數(shù)的,返回的都是json數(shù)據(jù)。
復(fù)制代碼 代碼如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="JqueryCSMethodForm.aspx.cs" Inherits="JQuerWeb.JqueryCSMethodForm" %>
<!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 runat="server">
<title></title>
<script type="text/javascript" src="JS/jquery-1.4.2.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$("input[type='button'][value='GetDate']").click(function() {
$.ajax({
type: "post",
url: "JqueryCSMethodForm.aspx/GetNowDate",
datatype: "json",
contentType: "application/json; charset=utf-8",
success: function(data) {
$("input#showTime").val(eval('(' + data.d + ')')[0].nowtime);
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert(errorThrown);
}
});
});
$("input[type='button'][value='GetOneDayLater']").click(function() {
$.ajax({
type: "post",
url: "JqueryCSMethodForm.aspx/GetOneDayLate",
data:"{days:1}",
datatype: "json",
contentType: "application/json; charset=utf-8",
success: function(data) {
$("input#showTime").val(eval('(' + data.d + ')')[0].nowtime);
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert(errorThrown);
}
});
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="button" value="GetDate" />
<input type=button value="GetOneDayLater" />
<input type="text" id="showTime" />
</div>
</form>
</body>
</html>

CS代碼:
復(fù)制代碼 代碼如下:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Services;
namespace JQuerWeb
{
public partial class JqueryCSMethodForm : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
[WebMethod]
public static String GetNowDate()
{
return "[{\"nowtime\":\"" + DateTime.Now.ToShortDateString() + "\"}]";
}
[WebMethod]
public static String GetOneDayLate(Int32 days)
{
return "[{\"nowtime\":\"" + DateTime.Now.AddDays(days).ToShortDateString() + "\"}]";
}
}
}

注意點:
(1) url的填寫格式 url+"/method name"
(2) contentType: "application/json; charset=utf-8", 這個必須要有
(3) 返回數(shù)據(jù)的類型為json
(4) data:"{days:1}",參數(shù)的傳遞
(5) 后臺的方法必須是public static 而且還要有 [WebMethod]特性修飾

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