Custom datalist Paging

Main front-end code:
<Table width = "100%" border = "0" cellspacing = "0" cellpadding = "0">
<Tr>
<TD>
<Asp: datalist id = "datalist1" runat = "server" width = "65%" onitemdatabound = "datalist1_itemdatabound">
<Itemtemplate>
<Table border = "0" cellpadding = "0" cellspacing = "0" width = "100%">
<Tr>
<TD style = "width: 10px;"> </TD>
<TD Height = "31">
<Asp: linkbutton id = "lkbtitle" runat = "server" commandargument = '<% # eval ("ArticleID") %>'
TEXT = '<% # eval ("title") %>' font-size = "medium" forecolor = "blue" onclick = "lkbtitle_click"> </ASP: linkbutton>
</TD>
</Tr>
<Tr>
<TD style = "width: 10px;"> </TD>
<TD>
<Span>
<Asp: Label id = "labcount" runat = "server" text = '<% # eval ("content") %>'> </ASP: Label>
</Span> </TD>
</Tr>
<Tr>
<TD style = "width: 10px;"> </TD>
<TD align = "right" Height = "31">
<SPAN class = "style19"> release date-<asp: Label id = "labdate" runat = "server" text = '<% # eval ("updatetime ") %> '> </ASP: Label>-</span> </TD>
</Tr>
</Table>
</Itemtemplate>
</ASP: datalist>
</TD>
</Tr>
</Table>
<Table width = "100%" border = "0" cellspacing = "0" cellpadding = "0">
<Tr>
<TD Height = "20" align = "center">
<Div id = "pageinfo" runat = "server"> </div>
</TD>
</Tr>
</Table>

Main background code:

Using system;
Using system. Data;
Using system. configuration;
Using system. collections;
Using system. Web;
Using system. Web. Security;
Using system. Web. UI;
Using system. Web. UI. webcontrols;
Using system. Web. UI. webcontrols. webparts;
Using system. Web. UI. htmlcontrols;
Using system. Data. sqlclient;

Public partial class fps_newsresult: system. Web. UI. Page
{
// The total number of records
Int totalcountrecord;
// Number of entries displayed per page
Int pageitem = 10;
// Current page number
Int currentpage = 1;

Protected void page_load (Object sender, eventargs E)
{
If (! Ispostback)
{
If (request. querystring ["page"]! = NULL)
{
Currentpage = convert. toint32 (request. querystring ["page"]);
}
Buildgrid ();
}
}

Public void buildgrid ()
{
Tring sqlstr = "select ArticleID, title, content, updatetime from article order by updatetime DESC ";
Sqlconnection mycoon = new sqlconnection (configurationmanager. connectionstrings ["myconnectionstring"]. connectionstring );
Sqldataadapter da = new sqldataadapter (sqlstr, mycoon );
Dataset DS = new dataset ();
Int startrecord = (currentpage-1) * pageitem;
Da. Fill (DS, startrecord, pageitem, "article ");
Datalist1.datasource = Ds. Tables ["article"]. defaultview;
Datalist1.databind ();
Sqlcommand mycmd = new sqlcommand ();
Mycmd. commandtext = "select count (*) from article ";
Mycmd. Connection = mycoon;
Mycoon. open ();
// Obtain the total number of records
Totalcountrecord = (INT) mycmd. executescalar ();
Mycoon. Close ();
Buildpagers ();
}

Public void buildpagers ()
{
// Offset
Int step = 10;
Int leftnum = 0;
Int rightnum = 0;
String pageurl = "*. aspx"; // * set it to the current page
Int pagecount = (INT) math. Ceiling (double) (totalcountrecord)/pageitem );
If (currentpage-step <1)
{
Leftnum = 1;
}
Else
{
Leftnum = currentpage-step;
}

If (currentpage + Step> pagecount)
{
Rightnum = pagecount;
}
Else
{
Rightnum = currentpage + step;
}
String output = "";
For (INT I = leftnum; I <= rightnum; I ++)
{
If (I = currentpage)
{
Output + = "<font color = Red>" + I. tostring () + "</font> ";
}
Else
{
Output + = "<a href = '" + pageurl + "? Key = "+ key +" & page = "+ I. tostring () +" '> ["+ I. tostring () +"] </a> ";
}
}
If (currentpage> 1)
{
Output = "<a href = '" + pageurl + "? Key = "+ key +" & page = "+ (currentpage-1) +" '> previous page </a> "+ output;
}

If (currentpage <pagecount)
{
Output + = "<a href = '" + pageurl + "? Key = "+ key +" & page = "+ (currentpage + 1) +" '> next page </a> ";
}

Pageinfo. innerhtml = output;
}
}