加两个字段,一个是父ID,如果是顶层,父ID就为0,一个是是否有下级,0元1有,一个函数就可解决,在函数中间调用本函数,找出了父层,再找他是否有下级,如果有,再找父ID为本ID的栏目

'==================================================

'过程名：listecityclass

'作 用：显示系统分类

'参 数：id ------ 要匹配的系统ID

'==================================================

Sub listecityclass(id)

dim F_reco,F_total,F_n,F_classid,F_classname,F_classlayer

set F_reco=Server.CreateObject("ADODB.Recordset")

F_reco.Open "select classid,classname,classlayer from ws_ecityclass where classparent=0 and classlist=0 order by classorder Asc",conn,1,1

F_total=F_reco.recordcount

if F_total>0 then

for F_n=1 to F_total

format_i=1

F_classid=F_reco(0)

F_classname=F_reco(1)

F_classlayer=F_reco(2)

response.write " if F_classlayer=0 then response.write " value=" & F_classid

if id=F_classid then response.write " selected"

response.write ">" & F_classname & ""

if F_classlayer=1 then call listecityclass_(id,F_classid) '调用另一个函数,在下面

F_reco.movenext

next

end if

F_reco.close : set F_reco=nothing

End Sub

Sub listecityclass_(id,iid)

dim F_reco,F_total,F_n,F_m,F_classid,F_classname,F_classlayer

set F_reco=Server.CreateObject("ADODB.Recordset")

F_reco.Open "select classid,classname,classlayer from ws_ecityclass where classparent="&iid&" and classlist=0 order by classorder Asc",conn,1,1

F_total=F_reco.recordcount

if F_total>0 then

for F_n=1 to F_total

F_classid=F_reco(0)

F_classname=F_reco(1)

F_classlayer=F_reco(2)

format_i=format_i+1

response.write " if F_classlayer=0 then response.write " value=" & F_classid

if id=F_classid then response.write " selected"

response.write ">"

for F_m=format_i to 2 step -1

response.write "  "

if F_m=2 then

if F_n=

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