實現無刷新聯動例子匯總

2024-05-06 16:20:40

字體：大中小

來源：轉載

供稿：網友

最近在用asp.net做項目的時候，遇到需要實現無刷新聯動的需求，度娘了一下，這里匯總一下幾個比較實用的例子，有需要的小伙伴可以參考下。

Iframe實現無刷新聯動

iframe的無刷新其實是局部刷新，狀態欄的滾動條還是會滾動，只是頁面不會閃爍，這是一種比較老的技術了，在處理的數據兩大的時候會比較慢，在本例中需要兩個頁面：index.aspx和frame.asapx,index.aspx用來顯示界面，其中有一個iframe標記，指向frame.aspx頁用來顯示結果

index.aspx前臺代碼

<%@ 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>無標題頁</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實現局部刷新

</td>

</tr>

<tr>

<td>

省份名稱:

</td>

<td>

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

<option value="湖北">湖北</option>

<option value="河北">河北</option>

<option value="廣東">廣東</option>

<option value="河南">河南</option>

</select>

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

</td>

</tr>

<tr>

<td>

顯示城市列表

</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的前臺代碼：

<%@ 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>無標題頁</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后臺代碼：

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("武漢");

this.ddlCity.Items.Add("黃岡");

this.ddlCity.Items.Add("黃石");

this.ddlCity.Items.Add("襄樊");

break;

case "河北":

this.ddlCity.Items.Clear();

this.ddlCity.Items.Add("石家莊");

this.ddlCity.Items.Add("唐山");

this.ddlCity.Items.Add("承德");

this.ddlCity.Items.Add("邯鄲");

break;

case "廣東":

this.ddlCity.Items.Clear();

this.ddlCity.Items.Add("廣州");

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("鄭州");

this.ddlCity.Items.Add("新鄉");

this.ddlCity.Items.Add("安陽");

this.ddlCity.Items.Add("信陽");

break;

}

}

}

JavaScript無刷新聯動

前臺頁面代碼：

<%@ 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>無標題頁</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">

腳本方法實現刷新

</td>

</tr>

<tr>

<td>

選擇省份:

</td>

<td>

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

<option value="湖北">湖北</option>

<option value="河北">河北</option>

<option value="廣東">廣東</option>

<option value="河南">河南</option>

</select>

<input id="btnQuery" type="button" value=" 查詢" 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>

后臺代碼：

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 '廣東':/n");

myscript.Append("FillData('" + GetCityStr("廣東") + "');/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 = "武漢,黃岡,黃石,襄樊";

break;

case "河北":

city = "石家莊,唐山,承德,邯鄲";

break;

case "廣東":

city = "廣州,佛山,深圳,珠海";

break;

case "河南":

city = "鄭州,新鄉,安陽,信陽";

break;

}

return city;

}

}

CallBack無刷新聯動

前臺代碼：

<%@ 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>無標題頁</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方法實現刷新

</td>

</tr>

<tr>

<td>

選擇省份:

</td>

<td>

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

<option value="湖北">湖北</option>

<option value="河北">河北</option>

<option value="廣東">廣東</option>

<option value="河南">河南</option>

</select>

<input id="btnQuery" type="button" value=" 查詢" 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>

后臺代碼：

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 成員

}

Ajax無刷新聯動

該例子也要用到兩個頁面：oec203index.aspx和datapage.aspx. datapage.aspx主要用來回送要顯示的數據

.aspx頁面前臺代碼：

<%@ 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>無標題頁</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方法實現刷新

</td>

</tr>

<tr>

<td>

選擇省份:

</td>

<td>

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

<option value="湖北">湖北</option>

<option value="河北">河北</option>

<option value="廣東">廣東</option>

<option value="河南">河南</option>

</select>

<input id="btnQuery" type="button" value=" 查詢" 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后臺代碼：

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("武漢,黃岡,黃石,襄樊");

break;

case "河北":

Response.Write("石家莊,唐山,承德,邯鄲");

break;

case "廣東":

Response.Write("廣州,佛山,深圳,珠海");

break;

case "河南":

Response.Write("鄭州,新鄉,安陽,信陽");

break;

}

}

}