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ASP分页函数、分页导航

 2009-06-04 10:42:36 来源:WEB开发网   
核心提示:程序代码<%'//分页函数 '//psize:每页显示的数据数 '//pindex:当前页码 '//tbName:表名 '//keyIndex:根据什么字段分页,一般是自增长类型(access数据库的自动编号) '//where:查询条件 '//
程序代码
<%
'//分页函数
   '//psize:每页显示的数据数
   '//pindex:当前页码
   '//tbName:表名
   '//keyIndex:根据什么字段分页,一般是自增长类型(access数据库的自动编号)
   '//where:查询条件
   '//order:排序条件,缺省为" order by " &keyIndex &" desc"
   '//总记录数与总页数可从返回的结果集中直接获取,字段datacount存储总记录数,字段pagecount存储总页数
   PRivate pindex,datacount,pages
   'datacount = 0
   'pages = 1
   public function changePage(psize,tbName,keyIndex,where,order)
     dim sqlstring
     pindex = Trim(Request.QueryString("page"))
     if not isnumeric(psize) or psize="" then psize=1'//每页显示的数据数
     if not isnumeric(pindex) or pindex="" then pindex=1'//当前页码
     if order="" then order=" order by " & keyIndex & " desc"
     '//获取总数据数
     'dim datacount,pages
     set rs=conn.execute("select count(*) as datacount from " & tbName & " where 1=1 " & where)
     datacount = rs("datacount")'//总记录数
     rs.close
     set rs=nothing
     '//计算总页数
     if (datacount mod psize)=0 then
       pages=datacount \ psize
     else
       pages=datacount \ psize + 1
     end if
     '//
     if cint(pindex)>pages then pindex=pages
     '拼接sql字符串
     if pindex<=1 then
       sqlstring="select top " & psize & " *," & datacount & " as datacount," & pages & " as pagecount from " &_
             tbName & " where 1=1 " & where & " " & order
     else
       sqlstring="select top " & psize & " *," & datacount & " as datacount," & pages & " as pagecount from " &_
             tbName & " where 1=1 and " & keyIndex & " not in(select top " & (pindex-1)*psize & " " & keyIndex & " from " &_
             tbName & " where 1=1 " & where & " " & order & ") " & where & " " & order
     end if
     'Response.Write(sqlstring)
     set changePage=conn.execute(sqlstring)
   end function
   '//分页导航
   '//fileName:文件名/当前页面的话,可以留空
   '//argString:分页参数例如classid=1&tid=16,分页必须的参数page不必填写
   '//pindex:当前页码
   '//datacount:总记录数
   '//pages:总页数
   '//showMsg:是否显示分页信息,参数为true/false
   '//showText:是否显示首页、上页、下页、末页的导航,参数为true/false
   '//showNumber:是否显示数字分页导航,参数为true/false
   'public function pageLink(fileName,argString,pindex,datacount,pages,showMsg,showText,showNumber)
   public function pageLink(fileName,argString,showMsg,showText,showNumber)
     '//
     if argString<>"" then argString = argString & "&"
     if not showText and not showNumber then showText=true
     '//
     if showMsg then
       Response.Write("[")
       Response.Write("第 <span style='color:red;'>" & pindex & "</span> 页")
       Response.Write("/分 <span style='color:red;'>" & pages & "</span> 页")
       Response.Write("/总 <span style='color:red;'>" & datacount & "</span> 条记录")
       Response.Write("] ")
     end if
     '//
     if showText then
       if pindex>1 then
         Response.Write("<a href='" & fileName & "?" & argString & "page=1'>[首页]</a>")
         Response.Write(" ")
         Response.Write("<a href='" & fileName & "?" & argString & "page=" & pindex - 1 & "'>[上页]</a>")
       else
         Response.Write("[首页]")
         Response.Write(" ")
         Response.Write("[上页]")
       end if
       Response.Write(" ")
       if pindex<pages then
         Response.Write("<a href='" & fileName & "?" & argString & "page=" & pindex + 1 & "'>[下页]</a>")
         Response.Write(" ")
         Response.Write("<a href='" & fileName & "?" & argString & "page=" & pages & "'>[末页]</a>")
       else
         Response.Write("[下页]")
         Response.Write(" ")
         Response.Write("[末页]")
       end if
     end if
     '//
     if showNumber then
       Response.Write("    ")
       for i = 4 to 1 step -1
         if (pindex - i)>0 then
           Response.Write("<a href='" & fileName & "?" & argString & "page=" & pindex - i & "'>" & pindex - i & "</a>")
           Response.Write(" ")
         end if
       next
       '//
       Response.Write("<span style='color:red;'>" & pindex & "</span>")
       '//
       for i = 1 to 4
         if (pindex + i)<=pages then
           Response.Write(" ")
           Response.Write("<a href='" & fileName & "?" & argString & "page=" & pindex + i & "'>" & pindex + i & "</a>")
         end if
       next
       '//
     end if
     '//
   end function
%>

Tags:ASP 函数 导航

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