实现无刷新联动例子汇总

2024-05-06 16:20:40

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最近在用asp.net做项目的时候，遇到需要实现无刷新联动的需求，度娘了一下，这里汇总一下几个比较实用的例子，有需要的小伙伴可以参考下。

Iframe实现无刷新联动

iframe的无刷新其实是局部刷新，状态栏的滚动条还是会滚动，只是页面不会闪烁，这是一种比较老的技术了，在处理的数据两大的时候会比较慢，在本例中需要两个页面：index.aspx和frame.asapx,index.aspx用来显示界面，其中有一个iframe标记，指向frame.aspx页用来显示结果

index.aspx前台代码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Index.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 id="Head1" runat="server">

<title>无标题页</title>

<script type="text/javascript">

function Query() {

var ddlpro = document.getElementById('ddlPro');

var pro = ddlpro.options[ddlpro.selectedIndex].innerText;

if (pro != "") {

document.getElementById("iframe1").src = "frame.aspx?Pro=" + pro;

}

}

</script>

</head>

<body>

<form id="form2" runat="server">

<div>

<table border="1" cellpadding="3" cellspacing="0" width="600px">

<tr>

<td colspan="2" align="center">

Iframe实现局部刷新

</td>

</tr>

<tr>

<td>

省份名称:

</td>

<td>

<select id="ddlPro" style="width: 201px">

<option value="湖北">湖北</option>

<option value="河北">河北</option>

<option value="广东">广东</option>

<option value="河南">河南</option>

</select>

<input id="Button3" type="button" value="查询" onclick="Query()" />

</td>

</tr>

<tr>

<td>

显示城市列表

</td>

<td>

<iframe src="frame.aspx" style="text-align: center" id="iframe1" width="100%"

height="100%" frameborder="0" scrolling="no" />

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

frame.aspx的前台代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="frame.aspx.cs" Inherits="myframe" %>

<!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">

<title>无标题页</title>

</head>

<body>

<form id="form2" runat="server">

<div>

<asp:DropDownList ID="ddlCity" runat="server" Width="179px">

</asp:DropDownList>

</div>

</form>

</body>

</html>

frame.aspx后台代码：

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 myframe : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

string pro = Request.QueryString["pro"];

switch (pro)

{

case "湖北":

this.ddlCity.Items.Clear();

this.ddlCity.Items.Add("武汉");

this.ddlCity.Items.Add("黄冈");

this.ddlCity.Items.Add("黄石");

this.ddlCity.Items.Add("襄樊");

break;

case "河北":

this.ddlCity.Items.Clear();

this.ddlCity.Items.Add("石家庄");

this.ddlCity.Items.Add("唐山");

this.ddlCity.Items.Add("承德");

this.ddlCity.Items.Add("邯郸");

break;

case "广东":

this.ddlCity.Items.Clear();

this.ddlCity.Items.Add("广州");

this.ddlCity.Items.Add("佛山");

this.ddlCity.Items.Add("深圳");

this.ddlCity.Items.Add("珠海");

break;

case "河南":

this.ddlCity.Items.Clear();

this.ddlCity.Items.Add("郑州");

this.ddlCity.Items.Add("新乡");

this.ddlCity.Items.Add("安阳");

this.ddlCity.Items.Add("信阳");

break;

}

}

}

JavaScript无刷新联动

前台页面代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.aspx.cs" Inherits="jacascript_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 id="Head1" runat="server">

<title>无标题页</title>

<script type="text/javascript">

function FillData(strcity) {

document.getElementById("ddlCity").options.length = 0;

var indexofcity;

var city;

while (strcity.length > 0) {

indexofcity = strcity.indexOf(",");

if (indexofcity > 0) {

city = strcity.substring(0, indexofcity);

strcity = strcity.substring(indexofcity + 1);

document.getElementById("ddlCity").add(new Option(city, city));

}

else {

document.getElementById("ddlCity").add(new Option(strcity, strcity));

break;

}

}

}

</script>

</head>

<body>

<form id="form2" runat="server">

<div>

<table width="700px" border="1" cellpadding="5" cellspacing="0">

<tr>

<td colspan="2" align="center">

脚本方法实现刷新

</td>

</tr>

<tr>

<td>

选择省份:

</td>

<td>

<select id="ddlPro" style="width: 201px">

<option value="湖北">湖北</option>

<option value="河北">河北</option>

<option value="广东">广东</option>

<option value="河南">河南</option>

</select>

<input id="btnQuery" type="button" value=" 查询" onclick="City()" />

</td>

</tr>

<tr>

<td>

城市:

</td>

<td>

<asp:DropDownList ID="ddlCity" runat="server" Width="201px">

</asp:DropDownList>

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

后台代码：

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;

using System.Text;

public partial class jacascript_Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

StringBuilder myscript = new StringBuilder();

myscript.Append("function City() {/n");

myscript.Append("var ddlpro=document.getElementById('ddlPro');/n");

myscript.Append("var pro=ddlpro.options[ddlpro.selectedIndex].innerText;/n");

//myscript.Append("var pro=document.getElementById('txtPro').value;/n");

myscript.Append("switch(pro) { /n");

myscript.Append("case '湖北':/n");

myscript.Append("FillData('" + GetCityStr("湖北") + "');/n");

myscript.Append("break;/n");

myscript.Append("case '河北':/n");

myscript.Append("FillData('" + GetCityStr("河北") + "');/n");

myscript.Append("break;/n");

myscript.Append("case '广东':/n");

myscript.Append("FillData('" + GetCityStr("广东") + "');/n");

myscript.Append("break;/n");

myscript.Append("case '河南':/n");

myscript.Append("FillData('" + GetCityStr("河南") + "');/n");

myscript.Append("break;}/n");

myscript.Append("}/n");

Page.ClientScript.RegisterClientScriptBlock(typeof(string), "city", myscript.ToString(), true);

}

private string GetCityStr(string pro)

{

string city = "";

switch (pro)

{

case "湖北":

city = "武汉,黄冈,黄石,襄樊";

break;

case "河北":

city = "石家庄,唐山,承德,邯郸";

break;

case "广东":

city = "广州,佛山,深圳,珠海";

break;

case "河南":

city = "郑州,新乡,安阳,信阳";

break;

}

return city;

}

}

CallBack无刷新联动

前台代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.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 id="Head1" runat="server">

<title>无标题页</title>

<script type="text/javascript">

function FillData()

{

var ddlpro=document.getElementById('ddlPro');

var pro=ddlpro.options[ddlpro.selectedIndex].value;

<% =ClientScript.GetCallbackEventReference(this,"pro","FillDll",null) %>

}

function FillDll(strcity)

{

document.getElementById("ddlCity").options.length=0;

var indexofcity;

var city;

while(strcity.length>0)

{

indexofcity=strcity.indexOf(",");

if(indexofcity>0)

{

city=strcity.substring(0,indexofcity);

strcity=strcity.substring(indexofcity+1);

document.getElementById("ddlCity").add(new Option(city,city));

}

else

{

document.getElementById("ddlCity").add(new Option(strcity,strcity));

break;

}

}

}

</script>

</head>

<body>

<form id="form2" runat="server">

<div>

<table width="700px" border="1" cellpadding="5" cellspacing="0">

<tr>

<td colspan="2" align="center">

callback方法实现刷新

</td>

</tr>

<tr>

<td>

选择省份:

</td>

<td>

<select id="ddlPro" style="width: 200px">

<option value="湖北">湖北</option>

<option value="河北">河北</option>

<option value="广东">广东</option>

<option value="河南">河南</option>

</select>

<input id="btnQuery" type="button" value=" 查询" onclick="FillData()" />

</td>

</tr>

<tr>

<td>

城市:

</td>

<td>

<asp:DropDownList ID="ddlCity" runat="server" Width="201px">

</asp:DropDownList>

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

后台代码：

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)

{

}

ICallbackEventHandler 成员

}

Ajax无刷新联动

该例子也要用到两个页面：oec203index.aspx和datapage.aspx. datapage.aspx主要用来回送要显示的数据

.aspx页面前台代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.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 id="Head1" runat="server">

<title>无标题页</title>

<script type="text/javascript">

var xmlhttp;

function getData() {

var ddlpro = document.getElementById("ddlPro");

var pro = ddlpro.options[ddlpro.selectedIndex].innerText;

xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

xmlhttp.onreadystatechange = statechange;

xmlhttp.Open("GET", "datapage.aspx?pro=" + pro, true);

xmlhttp.Send();

}

function statechange() {

if (xmlhttp.readystate == 4) {

if (xmlhttp.status == 200) {

FillData(xmlhttp.responseText);

}

}

}

function FillData(strcity) {

document.getElementById("ddlCity").options.length = 0;

var indexofcity;

var city;

while (strcity.length > 0) {

indexofcity = strcity.indexOf(",");

if (indexofcity > 0) {

city = strcity.substring(0, indexofcity);

strcity = strcity.substring(indexofcity + 1);

document.getElementById("ddlCity").add(new Option(city, city));

}

else {

document.getElementById("ddlCity").add(new Option(strcity, strcity));

break;

}

}

}

</script>

</head>

<body>

<form id="form2" runat="server">

<div>

<table width="700px" border="1" cellpadding="5" cellspacing="0">

<tr>

<td colspan="2" align="center">

ajax方法实现刷新

</td>

</tr>

<tr>

<td>

选择省份:

</td>

<td>

<select id="ddlPro" style="width: 201px">

<option value="湖北">湖北</option>

<option value="河北">河北</option>

<option value="广东">广东</option>

<option value="河南">河南</option>

</select>

<input id="btnQuery" type="button" value=" 查询" onclick="getData()" />

</td>

</tr>

<tr>

<td>

城市:

</td>

<td>

<asp:DropDownList ID="ddlCity" runat="server" Width="201px">

</asp:DropDownList>

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

datapage.aspx后台代码：

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_datapage : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

string pro = Request.QueryString["pro"];

Response.Clear();

switch (pro)

{

case "湖北":

Response.Write("武汉,黄冈,黄石,襄樊");

break;

case "河北":

Response.Write("石家庄,唐山,承德,邯郸");

break;

case "广东":

Response.Write("广州,佛山,深圳,珠海");

break;

case "河南":

Response.Write("郑州,新乡,安阳,信阳");

break;

}

}

}