局部无刷新总结[转]
一、使用Iframe 实现局部无刷新
说明：有两个页面：Iframe_Default.aspx、Iframe_Show.aspx
1.Iframe_Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Iframe_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 runat="server">
<title>Iframe 实现局部无刷新DEMO_城市</title>
<script language="javascript">
function Search()
{
var city = document.getElementById("TextBox1").value;
if (city!="")
{
document.getElementById("iframe1").src="iframe_show.aspx?city="+city;
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<strong>使用Iframe 实现局部无刷新DEMO<br />
</strong>城市名称：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<%--<asp:Button ID="Button1" runat="server" Text="查 询" OnClientClick="Search()" />--%>
<input id="Button1" type="button" value="查 询" onclick="Search()" />
<br />
<iframe src="Iframe_Show.aspx" style="text-align:left" id="iframe1" width="200px" height="50" frameborder="no" scrolling="no" />
</div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
2.Iframe_Show.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Iframe_Show.aspx.cs" Inherits="Iframe_Show" %>
<!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>Iframe 实现局部无刷新DEMO_城镇</title>
</head>
<body>
<form id="form1" runat="server">
<div>
城 镇：<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList></div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Iframe_Show : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Request["city"] != null)
{
string strCity = Request["city"];
switch (strCity)
{
case "武汉":
this.DropDownList1.Items.Clear();
this.DropDownList1.Items.Add("武昌");
this.DropDownList1.Items.Add("汉口");
this.DropDownList1.Items.Add("洪山");
break;
case "钟祥":
this.DropDownList1.Items.Clear();
this.DropDownList1.Items.Add("郢中");
this.DropDownList1.Items.Add("胡集");
this.DropDownList1.Items.Add("双河");
break;
default:
break;
}
}
}
}
3.Result：
二、.net2.0+JavaScript实现局部无刷新
说明：只有一个页面JavaScript_Default.aspx
1.JavaScript_Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="JavaScript_Default.aspx.cs" Inherits="JavaScript_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 runat="server">
<title>.net2.0+JavaScript实现局部无刷新</title>
<script language="javascript">
function FillData(strCity)
{
document.getElementById("DropDownList1").options.length=0;
var indexofcity;
var city;
//分割传递来的字符串
while(strCity.length>0)
{
//判断是否是最后一个字符串
indexofcity = strCity.indexOf(",");
if (indexofcity > 0)
{
city = strCity.substring(0,indexofcity);
strCity = strCity.substring(indexofcity+1);
//填充DropDownList1
document.getElementById("DropDownList1").add(new Option(city,city));
}
else
{
document.getElementById("DropDownList1").add(new Option(strCity,strCity));
break;
}
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<div>
<strong>
.net2.0+JavaScript实现局部无刷新Demo<br />
</strong>
城市名称：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<%--<asp:Button ID="Button1" runat="server" Text="查 询" OnClientClick="Search()" />--%>
<input id="Button1" type="button" value="查 询" onclick="Search()" />
<br />
城镇：<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList></div>
</div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class JavaScript_Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//创建字符串连接对象
System.Text.StringBuilder cityScript = new System.Text.StringBuilder();
//使用字符串组织一个JavaScript脚本方法,FillData()脚本方法在客户端页面定义
cityScript.Append("function Search() \n");
cityScript.Append("{ var city=document.getElementById('TextBox1').value; \n");
cityScript.Append(" switch (city) \n");
cityScript.Append(" { case '武汉': \n");
cityScript.Append(" FillData('" + GetCityStr("武汉") + "'); \n");
cityScript.Append(" break; \n");
cityScript.Append(" case '钟祥': \n");
cityScript.Append(" FillData('"+GetCityStr("钟祥")+"'); \n");
cityScript.Append(" break; \n");
cityScript.Append(" } \n ");
cityScript.Append("} \n");
//使用注册脚本方法在页面的客户端，注册这个字符串编写的脚本方法
Page.ClientScript.RegisterClientScriptBlock(typeof(string), "Search", cityScript.ToString(), true);
}
private string GetCityStr(string _city)
{
string strCity = null;
switch (_city)
{
case "武汉":
strCity = "武昌,汉口,洪山";
break;
case "钟祥":
strCity = "郢中,胡集,双河";
break;
default:
break;
}
return strCity;
}
}
2.Result：
三、使用.net回调(CallBack)技术实现局部刷新
说明：有一个页面CallBack_Default.aspx
1.CallBack_Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="CallBack_Default.aspx.cs" Inherits="CallBack_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 runat="server">
<title>使用.net回调(CallBack)技术实现局部刷新</title>
<script language="javascript">
function FillData()
{
var city = document.getElementById("TextBox1").value;
<% =ClientScript.GetCallbackEventReference(this,"city","FillDll",null) %>;
}
function FillDll(strCity)
{
document.getElementById("DropDownList1").options.length = 0;
var indexofcity;
var city;
//分割传递来的字符串
while(strCity.length>0)
{
//判断是否是最后一个字符串
indexofcity = strCity.indexOf(",");
if (indexofcity > 0)
{
city = strCity.substring(0,indexofcity);
strCity = strCity.substring(indexofcity+1);
//填充DropDownList1
document.getElementById("DropDownList1").add(new Option(city,city));
}
else
{
document.getElementById("DropDownList1").add(new Option(strCity,strCity));
break;
}
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<strong>使用.net回调(CallBack)技术实现局部刷新</strong><br />
城市名称：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<input id="Button1" type="button" value="查 询" onclick="FillData()" /><br />
城镇：<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList></div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class CallBack_Default : System.Web.UI.Page,ICallbackEventHandler
{
private string _data;
protected void Page_Load(object sender, EventArgs e)
{
}
public string GetCallbackResult()
{
return _data;
}
public void RaiseCallbackEvent(string eventArgument)
{
switch (eventArgument)
{
case "武汉":
_data = "武昌,汉口,洪山";
break;
case "钟祥":
_data = "郢中,胡集,双河";
break;
default:
break;
}
}
}
<%@ Page Language="C#" EnableEventValidation="false" AutoEventWireup="true" CodeFile="Ajax_Default.aspx.cs" Inherits="Ajax_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 runat="server">
<title>无标题页</title>
<script language="javascript">
var xmlHttp;
function GetData()//创建异步对象
{
//获取城市名称
var city = document.getElementById("TextBox1").value;
//创建异步调用对象
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
//将对象状态与事件关联
xmlHttp.onreadystatechange = StateChange;
//加载要链接的页面(响应的页)并将参数值编码(encodeURI)
xmlHttp.Open("POST","Ajax_Response.aspx?city="+encodeURI(city),true);
xmlHttp.Send();
}
function StateChange()//异步调用的状态
{
//判断异步调用是否已经完成
if (xmlHttp.readystate == 4)
{
//判断完成的提示代码是否是OK状态
if (xmlHttp.status ==200)
{
//将返回数据作为参数,传递给填充的方法
FillData(xmlHttp.responseText);
}
}
}
function FillData(strCity)
{
document.getElementById("DropDownList1").options.length = 0;
var indexofcity;
var city;
//分割传递来的字符串
while(strCity.length>0)
{
//判断是否是最后一个字符串
indexofcity = strCity.indexOf(",");
if (indexofcity > 0)
{
city = strCity.substring(0,indexofcity);
strCity = strCity.substring(indexofcity+1);
//填充DropDownList1
document.getElementById("DropDownList1").add(new Option(city,city));
}
else
{
lastCity=strCity.substring(0,2);
document.getElementById("DropDownList1").add(new Option(lastCity,lastCity));
break;
}
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<strong>
使用Ajax技术实现局部刷新</strong><br />
城市名称：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<%--<asp:Button ID="Button1" runat="server" Text="查 询" OnClientClick="GetData()" />--%>
<input id="Button1" type="button" value="查 询" onclick="GetData()" />
<br />
城镇：<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList></div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Ajax_Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Ajax_Response.aspx.cs" Inherits="Ajax_Show" %>
<!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>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Ajax_Show : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Request["city"] != null)
{
string city = Server.HtmlDecode(Request["city"]);//html解码
Response.Clear();
switch (city)
{
case "wuhan":
Response.Write("武昌,汉口,洪山");
break;
case "钟祥":
Response.Write("郢中,胡集,双河");
break;
default:
break;
}
}
}
}
说明：有两个页面：Iframe_Default.aspx、Iframe_Show.aspx
1.Iframe_Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Iframe_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 runat="server"> <title>Iframe 实现局部无刷新DEMO_城市</title> <script language="javascript"> function Search() {
var city = document.getElementById("TextBox1").value; if (city!="") { document.getElementById("iframe1").src="iframe_show.aspx?city="+city; } } </script></head><body> <form id="form1" runat="server"> <div> <strong>使用Iframe 实现局部无刷新DEMO<br /> </strong>城市名称：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <%--<asp:Button ID="Button1" runat="server" Text="查 询" OnClientClick="Search()" />--%> <input id="Button1" type="button" value="查 询" onclick="Search()" /> <br /> <iframe src="Iframe_Show.aspx" style="text-align:left" id="iframe1" width="200px" height="50" frameborder="no" scrolling="no" /> </div> </form></body></html>using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { }}2.Iframe_Show.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Iframe_Show.aspx.cs" Inherits="Iframe_Show" %><!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>Iframe 实现局部无刷新DEMO_城镇</title></head><body> <form id="form1" runat="server"> <div> 城 镇：<asp:DropDownList ID="DropDownList1" runat="server"> </asp:DropDownList></div> </form></body></html>using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class Iframe_Show : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { if (Request["city"] != null) { string strCity = Request["city"]; switch (strCity) { case "武汉": this.DropDownList1.Items.Clear(); this.DropDownList1.Items.Add("武昌"); this.DropDownList1.Items.Add("汉口"); this.DropDownList1.Items.Add("洪山"); break; case "钟祥": this.DropDownList1.Items.Clear(); this.DropDownList1.Items.Add("郢中"); this.DropDownList1.Items.Add("胡集"); this.DropDownList1.Items.Add("双河"); break; default: break; } } }}3.Result：
二、.net2.0+JavaScript实现局部无刷新
说明：只有一个页面JavaScript_Default.aspx
1.JavaScript_Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="JavaScript_Default.aspx.cs" Inherits="JavaScript_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 runat="server"> <title>.net2.0+JavaScript实现局部无刷新</title> <script language="javascript"> function FillData(strCity) { document.getElementById("DropDownList1").options.length=0; var indexofcity; var city; //分割传递来的字符串 while(strCity.length>0) { //判断是否是最后一个字符串 indexofcity = strCity.indexOf(","); if (indexofcity > 0) { city = strCity.substring(0,indexofcity); strCity = strCity.substring(indexofcity+1); //填充DropDownList1 document.getElementById("DropDownList1").add(new Option(city,city)); } else { document.getElementById("DropDownList1").add(new Option(strCity,strCity)); break; } } } </script></head><body> <form id="form1" runat="server"> <div> <div> <strong> .net2.0+JavaScript实现局部无刷新Demo<br /> </strong> 城市名称：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <%--<asp:Button ID="Button1" runat="server" Text="查 询" OnClientClick="Search()" />--%> <input id="Button1" type="button" value="查 询" onclick="Search()" /> <br /> 城镇：<asp:DropDownList ID="DropDownList1" runat="server"> </asp:DropDownList></div> </div> </form></body></html>using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class JavaScript_Default : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { //创建字符串连接对象 System.Text.StringBuilder cityScript = new System.Text.StringBuilder(); //使用字符串组织一个JavaScript脚本方法,FillData()脚本方法在客户端页面定义 cityScript.Append("function Search() \n"); cityScript.Append("{ var city=document.getElementById('TextBox1').value; \n"); cityScript.Append(" switch (city) \n"); cityScript.Append(" { case '武汉': \n"); cityScript.Append(" FillData('" + GetCityStr("武汉") + "'); \n"); cityScript.Append(" break; \n"); cityScript.Append(" case '钟祥': \n"); cityScript.Append(" FillData('"+GetCityStr("钟祥")+"'); \n"); cityScript.Append(" break; \n"); cityScript.Append(" } \n "); cityScript.Append("} \n"); //使用注册脚本方法在页面的客户端，注册这个字符串编写的脚本方法 Page.ClientScript.RegisterClientScriptBlock(typeof(string), "Search", cityScript.ToString(), true); } private string GetCityStr(string _city) { string strCity = null; switch (_city) { case "武汉": strCity = "武昌,汉口,洪山"; break; case "钟祥": strCity = "郢中,胡集,双河"; break; default: break; } return strCity; }}2.Result：
三、使用.net回调(CallBack)技术实现局部刷新
说明：有一个页面CallBack_Default.aspx
1.CallBack_Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="CallBack_Default.aspx.cs" Inherits="CallBack_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 runat="server"> <title>使用.net回调(CallBack)技术实现局部刷新</title> <script language="javascript"> function FillData() { var city = document.getElementById("TextBox1").value; <% =ClientScript.GetCallbackEventReference(this,"city","FillDll",null) %>; } function FillDll(strCity) { document.getElementById("DropDownList1").options.length = 0; var indexofcity; var city; //分割传递来的字符串 while(strCity.length>0) { //判断是否是最后一个字符串 indexofcity = strCity.indexOf(","); if (indexofcity > 0) { city = strCity.substring(0,indexofcity); strCity = strCity.substring(indexofcity+1); //填充DropDownList1 document.getElementById("DropDownList1").add(new Option(city,city)); } else { document.getElementById("DropDownList1").add(new Option(strCity,strCity)); break; } } } </script></head><body> <form id="form1" runat="server"> <div> <strong>使用.net回调(CallBack)技术实现局部刷新</strong><br /> 城市名称：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <input id="Button1" type="button" value="查 询" onclick="FillData()" /><br /> 城镇：<asp:DropDownList ID="DropDownList1" runat="server"> </asp:DropDownList></div> </form></body></html>using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class CallBack_Default : System.Web.UI.Page,ICallbackEventHandler{ private string _data; protected void Page_Load(object sender, EventArgs e) { } public string GetCallbackResult() { return _data; } public void RaiseCallbackEvent(string eventArgument) { switch (eventArgument) { case "武汉": _data = "武昌,汉口,洪山"; break; case "钟祥": _data = "郢中,胡集,双河"; break; default: break; } }}
2.Result：
四、使用Ajax技术实现局部刷新
说明：有两个页面Ajax_Default.aspx、Ajax_Response.aspx
1.Ajax_Default.aspx
<%@ Page Language="C#" EnableEventValidation="false" AutoEventWireup="true" CodeFile="Ajax_Default.aspx.cs" Inherits="Ajax_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 runat="server"> <title>无标题页</title> <script language="javascript"> var xmlHttp; function GetData()//创建异步对象 { //获取城市名称 var city = document.getElementById("TextBox1").value; //创建异步调用对象 xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); //将对象状态与事件关联 xmlHttp.onreadystatechange = StateChange; //加载要链接的页面(响应的页)并将参数值编码(encodeURI) xmlHttp.Open("POST","Ajax_Response.aspx?city="+encodeURI(city),true); xmlHttp.Send(); } function StateChange()//异步调用的状态 { //判断异步调用是否已经完成 if (xmlHttp.readystate == 4) { //判断完成的提示代码是否是OK状态 if (xmlHttp.status ==200) { //将返回数据作为参数,传递给填充的方法 FillData(xmlHttp.responseText); } } } function FillData(strCity) { document.getElementById("DropDownList1").options.length = 0; var indexofcity; var city; //分割传递来的字符串 while(strCity.length>0) { //判断是否是最后一个字符串 indexofcity = strCity.indexOf(","); if (indexofcity > 0) { city = strCity.substring(0,indexofcity); strCity = strCity.substring(indexofcity+1); //填充DropDownList1 document.getElementById("DropDownList1").add(new Option(city,city)); } else { lastCity=strCity.substring(0,2); document.getElementById("DropDownList1").add(new Option(lastCity,lastCity)); break; } } } </script></head><body> <form id="form1" runat="server"> <div> <strong> 使用Ajax技术实现局部刷新</strong><br /> 城市名称：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <%--<asp:Button ID="Button1" runat="server" Text="查 询" OnClientClick="GetData()" />--%> <input id="Button1" type="button" value="查 询" onclick="GetData()" /> <br /> 城镇：<asp:DropDownList ID="DropDownList1" runat="server"> </asp:DropDownList></div> </form></body></html>using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class Ajax_Default : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { }} 2.Ajax_Response.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Ajax_Response.aspx.cs" Inherits="Ajax_Show" %><!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>无标题页</title> </head><body> <form id="form1" runat="server"> <div> </div> </form></body></html>
using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class Ajax_Show : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { if (Request["city"] != null) { string city = Server.HtmlDecode(Request["city"]);//html解码 Response.Clear(); switch (city) { case "wuhan": Response.Write("武昌,汉口,洪山"); break; case "钟祥": Response.Write("郢中,胡集,双河"); break; default: break; } } }} 3.Result：
