一个简单的例子演示:通过浏览器的滚动条来动态加载数据
2012-07-28 00:07 音乐让我说 阅读(337) 评论(0) 编辑 收藏 举报直接贴代码了:
<%@ Page Title="Home Page" Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="CSASPNETInfiniteLoading._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>Infinite loading</title> <link rel="stylesheet" href="Styles/Site.css" type="text/css" /> <script type="text/javascript" src="Scripts/jquery-1.4.1.min.js"></script> <script type="text/javascript"> $(document).ready(function () { function lastPostFunc() { $('#divPostsLoader').html('<img src="images/bigLoader.gif">'); //send a query to server side to present new content $.ajax({ type: "POST", url: "Default.aspx/Foo", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", success: function (data) { if (data != "") { $('.divLoadData:last').after(data.d); } $('#divPostsLoader').empty(); } }) }; //When scroll down, the scroller is at the bottom with the function below and fire the lastPostFunc function $(window).scroll(function () { if ($(window).scrollTop() == $(document).height() - $(window).height()) { lastPostFunc(); } }); }); </script> </head> <body> <form id="Form1" runat="server"> <div style="height: 900px"> <h1> Simply scroll down to see new content loading...</h1> </div> <div class="divLoadData"> </div> <div id="divPostsLoader"> </div> </form> </body> </html>
后台代码:
using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.Services; using System.Data; using System.Text; namespace CSASPNETInfiniteLoading { public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } [WebMethod] public static string Foo() { StringBuilder getPostsText = new StringBuilder(); using (DataSet ds = new DataSet()) { ds.ReadXml(HttpContext.Current.Server.MapPath("App_Data/books.xml")); DataView dv = ds.Tables[0].DefaultView; foreach (DataRowView myDataRow in dv) { getPostsText.AppendFormat("<p>author: {0}</br>", myDataRow["author"]); getPostsText.AppendFormat("genre: {0}</br>", myDataRow["genre"]); getPostsText.AppendFormat("price: {0}</br>", myDataRow["price"]); getPostsText.AppendFormat("publish date: {0}</br>", myDataRow["publish_date"]); getPostsText.AppendFormat("description: {0}</br></p>", myDataRow["description"]); } getPostsText.AppendFormat("<div style='height:15px;'></div>"); } return getPostsText.ToString(); } } }
谢谢浏览!
作者:音乐让我说(音乐让我说 - 博客园)
出处:http://music.cnblogs.com/
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