一、post案例：
1.前台default.aspx：
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>$.post发送请求</title>
<script type="text/javascript"
src="Jscript/jquery-1.4.2-vsdoc.js">
</script>
<script type="text/javascript"
src="Jscript/jquery-1.4.2.js">
</script>
<style type="text/css">
body{font-size:13px}
.divFrame{width:260px;border:solid 1px #666}
.divFrame .divTitle{padding:5px;background-color:#eee;height:23px}
.divFrame .divTitle span{float:left;padding:2px}
.divFrame .divContent{padding:8px}
.divFrame .divContent .clsShow{font-size:14px}
select,input{float:left}
.txt{border:#666 1px solid;padding:2px;width:80px;margin-right:3px}
.btn {border:#666 1px solid;padding:2px;width:50px;
filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr=#ffffff, EndColorStr=#ECE9D8);}
</style> <script type="text/javascript">
$(function() {
$("#Button1").click(function() { //按钮单击事件
//打开文件，并通过回调函数返回服务器响应后的数据
$.post("Handler.ashx",
{ name: encodeURI($("#txtName").val()),
sex: encodeURI($("#selSex").val())
},
function(data) {
$("#divTip")
.empty() //先清空标记中的内容
.html(data); //显示服务器返回的数据
})
})
})
</script></head>
<body>
<div class="divFrame">
<div class="divTitle">
<span>姓名：</span>
<input id="txtName" type="text" class="txt" />
<select id="selSex" style="height:22px;margin-right:3px">
<option value="">选性别</option>
<option value="男">男</option>
<option value="女">女</option>
</select>
<input id="Button1" type="button"
class="btn" value="请求" />
</div>
<div class="divContent">
<div id="divTip"></div>
</div>
</div>
</body>
</html>2.后台handler.ashx
<%@ WebHandler Language="C#" Class="Handler" %>
using System;
using System.Web;
public class Handler : IHttpHandler {
public void ProcessRequest (HttpContext context) {
//context.Response.ContentType = "text/plain";
//context.Response.Write("Hello World");string strName = System.Web.HttpUtility.UrlDecode(context.Request["name"]);//解码姓名字符 string strSex = System.Web.HttpUtility.UrlDecode(context.Request["sex"]);//解码性别字符
string strHTML = "<div class='clsShow'>"; //初始化保存内容变量
if (strName == "<span style="font-family: Arial, Helvetica, sans-serif;">陶国荣</span>" && strSex == "<span style="font-family: Arial, Helvetica, sans-serif;">男</span>")
{
strHTML += "姓名：陶国荣<br>";
strHTML += "性别：男<br>";
strHTML += "邮箱：tao_guo_rong@163.com<hr>";
}
else if (strName == "<span style="font-family: Arial, Helvetica, sans-serif;">李建洲</span>" && strSex == "<span style="font-family: Arial, Helvetica, sans-serif;">女</span>")
{
strHTML += "姓名：李建洲<br>";
strHTML += "性别：女<br>";
strHTML += "邮箱：xiaoli@163.com<hr>";
}
strHTML += "</div>";
context.Response.Write(strHTML);
//context.Response.Write("return");//如直接返回字符，前台function中的data则为纯字符串“return”
}
public bool IsReusable {
get {
return false;
}
}
}name和对应的参数值encodeURI($("#txtName").val()),在函数中即可以表示为{name:encodeURI($("#txtName").val()),}
形式，也可以加对双方加单引号，ashx文件都可以得到参数值
2.encodeURI($("#txtName").val())是对遇到汉字的处理形式，相应的后台需要使用System.Web.HttpUtility.UrlDecode(Request["name"])来进行汉字解码
3.后台尽量使用ashx文件响应，会使得的页面相应速度加快
4.如直接使用context.Response.Write("return")，前台function中的data将得到纯字符串“return”（不含html）
4.结果如图：
另外附加使用服务器控件的案例：
1.前台
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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>
<title>$.post发送请求</title>
<script type="text/javascript"
src="Jscript/jquery-1.4.2-vsdoc.js">
</script>
<script type="text/javascript"
src="Jscript/jquery-1.4.2.js">
</script>
<style type="text/css">
body{font-size:13px}
.divFrame{width:260px;border:solid 1px #666}
.divFrame .divTitle{padding:5px;background-color:#eee;height:23px}
.divFrame .divTitle span{float:left;padding:2px}
.divFrame .divContent{padding:8px}
.divFrame .divContent .clsShow{font-size:14px}
select,input{float:left}
.txt{border:#666 1px solid;padding:2px;width:80px;margin-right:3px}
.btn {border:#666 1px solid;padding:2px;width:50px;
filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr=#ffffff, EndColorStr=#ECE9D8);}
</style>
<script type="text/javascript">
$(function () {
$("#Button1").click(function () { //按钮单击事件
//打开文件，并通过回调函数返回服务器响应后的数据
$.post("Handler.ashx",
{ name: $("input[id*=txtName]").val(), sex: $("#selSex").val()
},
function (data) {
$("#divTip")
.empty() //先清空标记中的内容
.html(data); //显示服务器返回的数据
})
})
})
</script>
</head>
<body>
<form runat=server>
<div class="divFrame">
<div class="divTitle">
<span>姓名：</span> <asp:TextBox ID="txtName" runat="server" class="txt" ></asp:TextBox>
<select id="selSex" style="height:22px;margin-right:3px"> <option value="">选性别</option> <option value="男">男</option> <option value="女">女</option> </select> <input id="Button1" type="button" class="btn" value="请求" /> </div> <div class="divContent"> <div id="divTip"></div> </div> </div> </form> </body> </html>
<%@ WebHandler Language="C#" Class="Handler" %>
using System;
using System.Web;
public class Handler : IHttpHandler {
public void ProcessRequest (HttpContext context) {
//context.Response.ContentType = "text/plain";
//context.Response.Write("Hello World");
string strName = System.Web.HttpUtility.UrlDecode(context.Request["name"]);//解码姓名字符
string strSex = System.Web.HttpUtility.UrlDecode(context.Request["sex"]);//解码性别字符
string strHTML = "<div class='clsShow'>"; //初始化保存内容变量
if (strName == "陶国荣" && strSex == "男")
{
strHTML += "姓名：陶国荣<br>";
strHTML += "性别：男<br>";
strHTML += "邮箱：tao_guo_rong@163.com<hr>";
}
else if (strName == "李建洲" && strSex == "女")
{
strHTML += "姓名：李建洲<br>";
strHTML += "性别：女<br>";
strHTML += "邮箱：xiaoli@163.com<hr>";
}
strHTML += "</div>";
context.Response.Write(strHTML);
//context.Response.Write("return");
}
public bool IsReusable {
get {
return false;
}
}
}结果显示：
csdn的编辑器好像有点问题哦，着重号都变成了标签来表示，改了好几次，只好将着重部分单独分隔成一段了，希望大家见谅
原文：http://blog.csdn.net/goodshot/article/details/42581513
