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实现无刷新联动例子汇总

作者:佚名    责任编辑:admin    更新时间:2022-06-22

   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

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 <%@ 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:

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 <%@ 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:

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 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"