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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="/UploadFiles/2021-04-02/PagerView.js">处理页面程序如下：
<%@ 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。
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