ASP通用分页的实现

自己写的通用分页，可设置显示的分页链接数，带下拉选择：

1<%
2'Written by Shaoyun 20:17 2008年5月29日 0:38
3'Email:shaoyun at yeah.net
4'Blog:http：//shaoyun.cnblogs.com
5'分页函数:splitpage(记录总数,每页显示记录数,显示几条分页链接)
6Function splitpage(rscount,pagesize,shownum)
7
8Dim pagenum,curpage,first_page,last_page,up_page,down_page,idx,addr_url,splitpage_html
9
10addr_url=Request.ServerVariables("URL")
11addr_url=Mid(addr_url,InstrRev(addr_url,"/")+1)
12addr_url=addr_url & "?page="
13
14if (rscount mod pagesize)=0 then
15　　pagenum=rscount/pagesize
16else
17　　pagenum=rscount/pagesize+1
18end if
19first_page=1
20last_page=pagenum
21
22curpage=1
23if isnumeric(trim(request.QueryString("page"))) then
24　　curpage=trim(request.QueryString("page"))
25　　if pagenum-curpage<0 then curpage=pagenum
26else
27　　curpage=1
28end if
29
30up_page=curpage-1
31down_page=curpage+1
32
33splitpage_html="共$rscount$条记录&nbsp;$pagesize$条/页&nbsp;第$curpage$/$pagenum$页&nbsp;"
34splitpage_html=replace(splitpage_html,"$rscount$",rscount)
35splitpage_html=replace(splitpage_html,"$pagesize$",pagesize)
36splitpage_html=replace(splitpage_html,"$curpage$",curpage)
37splitpage_html=replace(splitpage_html,"$pagenum$",pagenum)
38
39splitpage_html=splitpage_html & "<a href='" & addr_url & first_page & "'>首页</a>&nbsp;"
40if curpage>1 then
41　　splitpage_html=splitpage_html & "<a href='" & addr_url & up_page & "'>上一页</a>&nbsp;"
42else
43　　splitpage_html=splitpage_html & "上一页&nbsp;"
44end if
45
46dim fbegin,fend
47if shownum mod 2 then
48　　show_front_num=int(shownum/2)
49　　show_back_num=int(shownum/2)
50else
51　　show_front_num=int(shownum/2)-1
52　　show_back_num=int(shownum/2)
53end if
54if curpage-1<show_front_num then
55　　fbegin=1
56　　fend=shownum
57elseif curpage+show_back_num>pagenum then
58　　fend=pagenum
59　　fbegin=pagenum-shownum+1
60else
61　　fbegin=curpage-show_front_num
62　　fend=curpage+show_back_num
63end if
64for idx=fbegin to fend
65　　if curpage-idx=0 then
66　　　　splitpage_html=splitpage_html & "<b>" & idx & "</b>&nbsp;"
67　　else
68　　　　splitpage_html=splitpage_html & "<a href='" & addr_url & idx & "'>" & idx & "</a>&nbsp;"
69　　end if
70next
71
72if pagenum-curpage>0 then
73　　splitpage_html=splitpage_html & "<a href='" & addr_url & down_page & "'>下一页</a>&nbsp;"
74else
75　　splitpage_html=splitpage_html & "下一页&nbsp;"
76end if
77splitpage_html=splitpage_html & "<a href='" & addr_url & last_page & "'>尾页</a>&nbsp;"
78
79splitpage_html=splitpage_html & "跳转到&nbsp;"
80splitpage_html=splitpage_html & "<select onChange=window.location.href=this.options[this.selectedIndex].value>"
81For idx=1 To pagenum
82　　If curpage-idx=0 Then
83　　　　splitpage_html=splitpage_html & "<option value='" & addr_url　& idx & "' selected>第" & idx & "页</option>"
84　　Else
85　　　　splitpage_html=splitpage_html & "<option value='" & addr_url　& idx & "'>第" & idx & "页</option>"
86　　End if
87Next
88splitpage_html=splitpage_html & "</select>"
89
90response.Write splitpage_html
91
92End Function
93%>