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; } }}以上所述就是本文的全部內容了，希望大家能夠喜歡。
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