Detailed explanation of ASP paging technology (prev/next page)

First, let's understand the principle.

Home:

This use of the current page is the first page when discriminant, if the current for the first page (that is, home), then display the first two words, no link, otherwise provide direct jump to the homepage of the link.

Previous page:

When you are currently on the first page, the link fails, and in turn, links to the previous page in front, where you use: <%=curpage-1%>, that is, by subtracting 1 from the current number of pages and getting the previous page.

Next page:

Here you need to use rs.pagecount this property to compare, if the total number of pages is less than the current page plus 1 of the value, which indicates that this is the next, the link will be invalidated, otherwise linked to the next page.

Last:

As with the function on the next page, the link is invalidated when the last page is found, otherwise the current page is specified as Rs.pagecount (total pages).

Knowing the above things, we can do the paging code according to the requirement.

On the page where you want the page number to appear:

Instance 1

The code is as follows

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Page=cint (Request ("page") ' page is the parameter of the page number in the URL Querys= "..." ' Define additional parameters for the URL Rs. Pagesize=30 ' per page number, set yourself Dim Pagecount=rs. PageCount Rs. Absolutepage=pageno If Pagecount>1 Then Response.Write ("Pagination:") Outpages pagecount,page ' here ' to show page numbers, function see after Response.Write "<br><br>" End If Dim showcount=0 Do while (not rs.eof and Showcount<rs. PageSize) Show each piece of content Showcount=showcount+1 Rs.movenext Loop

' The following is a function to display page numbers, which can be placed in a single file:

The code is as follows

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Sub Outpages (Pagecount,curpage) Yyy=int ((curpage-1)/10) Startno=yyy*10+1 Endno=startno+10-1 If Startno<1 then startno=1 If Endno>pagecount then Endno=pagecount Response.Write "<b>" If Startno>1 Then Response.Write "&nbsp;&nbsp;<a target=_top href=?" &querys& "&page=" & (startno-10) & "><<</a>&nbsp;&nbsp;" End If For J=startno to Endno If J=page Then Response.Write "" &j& "&nbsp;&nbsp;" Else Response.Write "<a target=_top href= '" Response.Write "?" &querys& "&page=" &j Response.Write "' >[" &j& "]</a>&nbsp;&nbsp;" End If Next If Pagecount>endno Then Response.Write "&nbsp;&nbsp;<a target=_top href=?" &querys& "&page=" & (endno+1) & ">>></a>" End If Response.Write "</b>" End Sub

Instance 2

The code is as follows

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<% Set Conn=server.createobject ("Adodb.connection") Conn.Open ("Driver=driver do Microsoft Access (*.mdb);" uid=admin;pwd=;d bq= "&server.mappath (" 1.mdb ")) Set Rs=server.createobject ("Adodb.recordset") Sql= "SELECT * FROM Student" Rs.Open sql,conn,3 Rs.pagesize=20 If Request ("page") <> "then Epage=cint (Request ("page") If Epage<1 then epage=1 If Epage>rs.pagecount then Epage=rs.pagecount Else Epage=1 End If Rs.absolutepage=epage %> <table border= "0" cellpadding= "0" cellspacing= "1" bgcolor= "#0000FF" width= "80%" align= "Center" > <tr bgcolor= "#FFFFFF" align= "Center" > <th><%=rs (0). Name%></th><th><%=rs (1). Name%></th><th><%=rs (2). Name %></th> </tr> <% For I=0 to Rs.pagesize-1 If Rs.bof or rs.eof then exit for %> <tr bgcolor= "#FFFFFF" align= "Center" > <td><%=rs (0). Value%></td><td><%=rs (1). Value%></td><td><%=rs (2). Value%></td> </tr> <% Rs.movenext () Next %> </table> <p align= "center" > <a href= "" > Home </a>&nbsp; <a href= "index.asp?page=<%=epage-1%>" > previous page </a>&nbsp; <a href= "index.asp?page=<%=epage+1%>" > next page </a>&nbsp; <a href= "index.asp?page=<%=rs.pagecount%>" > Last </a> </p> <p align= "Center" > now is <%=epage%> page altogether has <%=rs.pagecount%> page </p> <% Conn.close () %>

The table has three fields, indicating that for student the others do not need to be changed, the pagesize can also be changed, if the record is less.

There are several key commands for implementing pagination in ASP

The code is as follows	Copy Code
Rs. Pagesize=30 ' per page number, set yourself Dim Pagecount=rs. PageCount Rs. Absolutepage=pageno

These three are our ASP in the paging must be used, otherwise your pagination will not be successful Oh, this is also the ASP's short board to make people feel the way the mind.