本文講述了asp.net異步獲取datatable并顯示的實現方法。分享給大家供大家參考，具體如下：
上面就是結果，前臺代碼如下：
%@ 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=dataindex=" + currentpage,
function(data) {
$("#sjxs").append(data);
});
$.get("Handler.ashx?flag=count",
function(count) {
var pager = new PagerView('pager');
pager.itemCount = count;
pager.size = 5;
pager.onclick = function(index) {
currentpage = index;
$.get("Handler.ashx?flag=dataindex=" + 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 style="width: 98%; border: solid 1px #EDF7DC;" class="fileset_style">
legend class="leg_style">查詢結果/legend>
%--div style="overflow:scroll;width:100%;height:100%">--%>
table border="1" cellpadding="0" cellspacing="0" width="100%" align="center" id="sjxs" class="TableStyleZB">
tr class="trTitle">
td colspan="5">當前發票庫存情況/td>
td colspan="4">購買后一年(含)以上未驗舊使用情況/td>
td>/td>
/tr>
tr class="trTitle">
td>管理機關/td>
td>合計/td>
td>機打發票/td>
td>手工發票/td>
td>冠名發票/td>
td>其他/td>
td>正常戶/td>
td>占庫存戶數的比率/td>
td>非正常戶/td>
td>證件失效戶/td>
/tr>
tr class="trTitle">
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>
處理頁面程序如下：
%@ WebHandler Language="C#" Class="Handler" %>
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中顯示不出來結果，但是在chrome、firefox和opera中倒是顯示都正常，感興趣的朋友可以對此加以完善。
希望本文所述對大家asp.net程序設計有所幫助。
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