本文讲述了asp.net异步获取datatable并显示的实现方法。分享给大家供大家参考，具体如下：
上面就是结果，前台代码如下：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MethodOne.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 runat="server"> <title></title> <link href="swcss.css" rel="stylesheet" type="text/css" /> <link href="TableZB.css" rel="stylesheet" type="text/css" /> <script src="js-datagrid/scripts/PagerView.js" type="text/javascript"></script> <link href="js-datagrid/style.css" rel="stylesheet" type="text/css" /> <script src="jquery-1.4.1.min.js" type="text/javascript"></script> <script type="text/javascript"> var currentpage = 1; $(document).ready(function() { $.get("Handler.ashx?flag=data&index=" + currentpage, function(data) { $("#sjxs").append(data); }); $.get("Handler.ashx", function(count) { var pager = new PagerView('pager'); pager.itemCount = count; pager.size = 5; pager.onclick = function(index) { currentpage = index; $.get("Handler.ashx?flag=data&index=" + index, function(data) { $("#sjxs tr").each(function(m) { $("#add" + m).remove(); }); $("#sjxs").append(data); }); }; pager.render(); } ); }); </script> </head> <body> <form id="form1" runat="server"> <fieldset> <legend>查询结果</legend> <%--<div>--%> <table border="1" cellpadding="0" cellspacing="0" width="100%" align="center" id="sjxs"> <tr> <td colspan="5">当前发票库存情况</td> <td colspan="4">购买后一年(含)以上未验旧使用情况</td> <td></td> </tr> <tr> <td>管理机关</td> <td>合计</td> <td>机打发票</td> <td>手工发票</td> <td>冠名发票</td> <td>其他</td> <td>正常户</td> <td>占库存户数的比率</td> <td>非正常户</td> <td>证件失效户</td> </tr> <tr> <td>0</td> <td>1</td> <td>2</td> <td>3</td> <td>4</td> <td>5</td> <td>6</td> <td>7=6/1</td> <td>8</td> <td>9</td> </tr> </table> <%--</div>--%> </fieldset> <div id="pager"></div> <div id="info"></div> </form> </body> </html>
处理页面程序如下：
<%@ WebHandler Language="C#" %> using System; using System.Web; using System.Data; using System.Data.SqlClient; using System.Text; public class Handler : IHttpHandler { public void ProcessRequest (HttpContext context) { context.Response.ContentType = "text/plain"; if (context.Request.QueryString["flag"].Equals("data")) { context.Response.Write(GetResult(5,Int32.Parse(context.Request.QueryString["index"]))); } if (context.Request.QueryString["flag"].Equals("count")) { context.Response.Write(getCount()); } } private string GetResult() { DataTable dt = new DataTable(); using (SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["conn"])) { conn.Open(); string sql = "SELECT * FROM TestBlog "; SqlDataAdapter sda = new SqlDataAdapter(sql, conn); sda.Fill(dt); } int rLen = dt.Rows.Count; int cLen = dt.Columns.Count; StringBuilder sb = new StringBuilder(); for (int j = 0; j < rLen; j++) { sb.Append("<tr>"); for (int i = 0; i < cLen; i++) { sb.Append("<td>"); sb.Append(dt.Rows[j][i].ToString()); sb.Append("</td>"); } sb.Append("</tr>"); } return sb.ToString(); } private string GetResult(int pagecount,int currentpage) { DataTable dt = new DataTable(); using (SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["conn"])) { conn.Open(); string sql = "SELECT TOP "+pagecount+" * FROM TestBlog tb WHERE ydid NOT IN (SELECT TOP "+pagecount*(currentpage-1)+" ydid FROM TestBlog tb2) "; SqlDataAdapter sda = new SqlDataAdapter(sql,conn); sda.Fill(dt); } int rLen = dt.Rows.Count; int cLen = dt.Columns.Count; StringBuilder sb = new StringBuilder(); for (int j = 0; j < rLen; j++) { sb.Append("<tr id=add"+j+">"); for (int i = 0; i < cLen; i++) { sb.Append("<td>"); sb.Append(dt.Rows[j][i].ToString()); sb.Append("</td>"); } sb.Append("</tr>"); } return sb.ToString(); } private string getCount() { DataTable dt = new DataTable(); using (SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["conn"])) { conn.Open(); string sql = "select count(*) from testblog"; SqlDataAdapter sda = new SqlDataAdapter(sql, conn); sda.Fill(dt); } return dt.Rows[0][0].ToString(); } public bool IsReusable { get { return false; } } }
可惜的是，在ie7中显示不出来结果，但是在chrome、firefox和opera中倒是显示都正常，感兴趣的朋友可以对此加以完善。
希望本文所述对大家asp.net程序设计有所帮助。