分页组件 ASP+VBScript

<script

	language="vbscript"

	runat="server">



class pagerecordset



	private o_rs

	private o_cmd

	private o_bpos

	private o_epos

	public pagerecordcount

	public totalrecord

	public firstpage

	public prevpage

	public pageindex

	public totalpage

	public nextpage

	public lastpage



	private sub class_initialize

		totalpage = 1

		pagerecordcount = 10

		pageindex = 1

		totalrecord = 0

		firstpage = 1

		prevpage = 1

		nextpage = 1

		lastpage = 1

	end sub



	private sub class_terminate

		set o_rs = nothing

		set o_cmd = nothing

	end sub



	private function errmsg(funcbody , errdescription)

		dim msg

		msg = ""

		msg = msg & "<div style='padding:5px; background:#ffd700; color:#000; font-family:Verdana; font-size:11px;'>"

		msg = msg & " <div>Fundation：<strong>" & funcbody & "</strong></div>"

		msg = msg & " <div>Description：" & errdescription & "</div>"

		msg = msg & "</div>"

		errmsg = msg

	end function



	private function op3(condition , iftrue , iffalse)

		dim o_return

		o_return = null

		if condition = true then

			o_return = iftrue

		else

			o_return = iffalse

		end if

		op3 = o_return

	end function



	public function fetch(sql , constring)

		on error resume next

		set o_cmd = server.createobject("adodb.command")

		o_cmd.activeconnection = constring

		o_cmd.activeconnection.cursorlocation = 3

		o_cmd.commandtext = sql

		o_cmd.prepared = true

		set o_rs = o_cmd.execute()

		if o_rs.recordcount = 0 then

		else

			pagefloat = o_rs.recordcount / pagerecordcount

			pageint = int(pagefloat)

			totalpage = op3(pagefloat > pageint , pageint + 1 , pageint)

			totalrecord = o_rs.recordcount

			firstpage = 1

			lastpage = totalpage

			prevpage = pageindex - 1

			nextpage = pageindex + 1

			if prevpage < 1 then prevpAge = lastpage end if

			if nextpage > lastpage then nextpage = firstpage end if

			o_bpos = (pageindex - 1) * pagerecordcount + 1

			o_epos = o_bpos + pagerecordcount

			if o_epos > totalrecord then o_epos = totalrecord - o_bpos + o_bpos + 1 end if

			o_rs.absoluteposition = o_bpos

		end if

		if err.number <> 0 then

			response.Write(errmsg("pagerecordset.fetch()" , err.description))

			response.End()

		else

		end if

		err.clear()

	end function



	public function read()

		on error resume next

		dim o_return

		o_return = false

		if o_bpos >= o_epos then

		else

			o_rs.absoluteposition = o_bpos

			o_bpos = o_bpos + 1

			o_return = true

		end if

		read = o_return

		if err.number <> 0 then

		response.write(errmsg("pagerecordset.read()" , err.description))

			response.end()

		else

		end if

		err.clear()

	end function



	public function getfield(fieldname)

		on error resume next

		if o_rs.recordcount = 0 then

			getfield = null

		else

			getfield = o_rs(fieldname)

		end if

		if err.number <> 0 then

			response.write(errmsg("pagerecordset.getfield(fieldname)" , err.description))

			response.end()

		else

		end if

		err.clear()

	end function



	public function getposition()

		on error resume next

		if o_rs.recordcount = 0 then

			getposition = 0

		else

			getposition = o_rs.absoluteposition

		end if

		if err.number <> 0 then

			response.write(errmsg("pagerecordset.getposition()" , err.description))

			response.end()

		else

		end if

		err.clear()

	end function



	public function shownavigation(pagequery , otherquery)

		on error resume next

		if totalrecord > 0 then

			dim html

			html = ""

			html = html & "<div style='text-align:center; padding:5px;'>"

			html = html & " <div>"

			html = html & "  第 " & pageindex & "/" & totalpage & " 页，每页 " & pagerecordcount & " 条记录，共 " & totalrecord & " 条记录。"

			html = html & "  <a href='?" & pagequery & "=" & firstpage & otherquery & "' style='font-family:webdings; font-size:12px;' target='_self'>9</a>"

			html = html & "  <a href='?" & pagequery & "=" & prevpage & otherquery & "' style='font-family:webdings; font-size:12px;' target='_self'>7</a>"

			html = html & "  " & pageindex

			html = html & "  /"

			html = html & "  " & totalpage

			html = html & "  <a href='?" & pagequery & "=" & nextpage & otherquery & "' style='font-family:webdings; font-size:12px;' target='_self'>8</a>"

			html = html & "  <a href='?" & pagequery & "=" & lastpage & otherquery & "' style='font-family:webdings; font-size:12px;' target='_self'>:</a>"

			html = html & " </div>"

			html = html & "</div>"

			response.write(html)

		end if

		if err.number <> 0 then

			response.write(errmsg("pagerecordset.shownavigation(pagequery, otherquery)" , err.description))

			response.end()

		else

		end if

		err.clear()

	end function



	public function release()

		on error resume next

		o_rs.close()

		set o_rs = nothing

		totalpage = 1

		pagerecordcount = 10

		pageindex = 1

		totalrecord = 0

		firstpage = 1

		prevpage = 1

		nextpage = 1

		lastpage = 1

		if err.number <> 0 then

			response.write(errmsg("pagerecordset.release()" , err.description))

			response.end()

		else

		end if

		err.clear()

	end function

end class



</script>