ASP to generate an array of infinite class classification

Array

It's really a headache to loop through the infinite classes.
For example, we have to loop out a select, or a table, to write a lot of judgments.
Is there any better way?
My approach is to generate an array that can be called repeatedly, directly looping the array on the line.
For convenience, I wrote it as a class.

Class.asp

Returns an array of all categories, sorted in order
There are 4 properties:
Set Aa=new classlist
Aa.id= "id"//Number Name
Aa.classname= "classname"//category name
aa.pid= "pid"//Parent ID Name
Aa.db_name= "class"/table name
List=aa.arrylist ()

<%
Class Classlist
Private c_id
Private C_db_name
Private C_pid
Private C_classname
Public Property Let ID (str)
c_id = str
End Property
Public Property Let Db_name (str)
C_db_name = str
End Property
Public Property Let PID (str)
C_pid = str
End Property
Public Property Let classname (str)
C_classname = str
End Property

Dim list ()

Dim i,n
Private Sub class_initialize () ' Initialize variable
I=0
N=0
End Sub


Public Function Classarry (thisid,pid) ' gets subordinate ID
If Pid>0 Then
Sql= "SELECT * from" &c_db_name& "where" &c_pid& "=" &thisid
Else
Sql= "SELECT * from" &c_db_name& "where" &c_id& "=" &thisid
End If
Set Rs_c=conn.execute (SQL)
N=n+1

Do as not rs_c.eof

List (0,i) =rs_c (c_id) ' Mount in an array
List (1,i) =rs_c (c_classname)
List (2,i) =n
' N=n+1
I=i+1
Thisid=classarry (Rs_c (c_id), 1) ' Here recursively called, until the last subclass

Rs_c.movenext
Loop
N=n-1
Rs_c.close

End Function

Public Function arrylist () ' loops out all root classes
Set Rs_c=conn.execute ("SELECT count (" &c_id& ") from" &c_db_name)
Lenght=rs_c (0)
Rs_c.close
ReDim List (2,lenght) ' Set array
Set Rs1=conn.execute ("select" &c_id& "from" &c_db_name& "where" &c_pid& "= 0")
Do as not rs1.eof
Call Classarry (Rs1 (c_id), 0)
' N=1
Rs1.movenext
Loop
Rs1.close
Arrylist=list
End Function

End Class
%>

Instance test:

Table class

Field
ID: Automatic Numbering
ClassName: Name
PID: Parent ID

Test.asp

<!--#include file= "class.asp"-->
<%
Set conn=server.createobject ("Adodb.connection")
Set Rs = Server.CreateObject ("ADODB.") Recordset ")
strDSN = "Driver={microsoft Access Driver (*.mdb)}; Dbq= "
strDSN = strDSN & Server.MapPath ("Test.mdb")
Conn. Open strDSN

function ins (num)
Str= ""
For Ii=1 to Num
str=str& "|"
Next
Ins=str
End Function

Set Aa=new classlist
Aa.id= "id"
Aa.classname= "ClassName"
Aa.pid= "pid"
Aa.db_name= "Class"
List=aa.arrylist ()

Response.Write "<table border=1><tr><td>id</td><td> name </td><td> category </ Td></tr> "
For j=0 to UBound (list,2)
Response.Write "<tr><td>" &list (0,j) & "</td><td>" &list (1,j) & "</td> <td> "&list (2,j) &" </td></tr> "
Next
Response.Write "</table>"
' Response.Write List (1,3)
%>
<select name= "" >
<% for I=0 to UBound (list,2)%>
<option value= "" ><%
Response.Write Ins (list (2,i))
Response.Write List (1,i)%></option>
<%next%>
</select

Loop Result:

Www.hubro.net/code/class/test.asp

Basically can meet the general needs!