asp.net异步获取datatable并显示

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?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=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 style = " width: 98%; border: solid 1px  #EDF7DC; "   class = " fileset_style " >
     < legend  class = " leg_style " > 查询结果 </ 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 " > 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   class = " trTitle " >
     < 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   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 >

 

 

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，求解。