实例功能说明:
当点击"获取时间"的按钮时，能够在不刷新页面的前提下获取系统当前时间.
1:前台页面代码:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Test.aspx.cs" Inherits="WebApplication1.Test" %>
<!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">
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<head runat="server">
<title></title>
<script type="text/javascript" language="javascript">
$(function () {
$("#btnGet").click(function () {
$.post("DataGet.ashx", { "ID": 1, "Name": "黎明" },
function (data, state) {
if (state == "success") {
$("#txtDate").val(data);
}
}
);
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="text" id="txtDate" /><input type="button" id="btnGet" value="获取时间"/>
</div>
</form>
</body>
</html>
2:一般处理程序:DataGet.ashx,代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WebApplication1
{
/// <summary>
/// DataGet 的摘要说明
/// </summary>
public class DataGet : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
// context.Response.Write("Hello World");
context.Response.Write(DateTime.Now.ToLongTimeString());
}
public bool IsReusable
{
get
{
return false;
}
}
}
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WebApplication1
{
/// <summary>
/// DataGet 的摘要说明
/// </summary>
public class DataGet : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
// context.Response.Write("Hello World");
context.Response.Write(DateTime.Now.ToLongTimeString());
}
public bool IsReusable
{
get
{
return false;
}
}
}
}
在实践中最容易出现错误的地方是：由于括号太多，而且都是使匿名方法,所以容易少了括号或多打括号.