Question

Dynamically load two list boxes from two seperate tables on a ASP Page

Asked by: running32

From my asp page I need to load two list boxes from two seperate tables.

Thanks

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Asked On
2003-06-12 at 13:25:35ID20646496
Topic

Web Languages/Standards

Participating Experts
4
Points
500
Comments
6

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Answers

 

by: HurklePosted on 2003-06-12 at 13:55:06ID: 8712615

This assumes you already know how to correctly set up a data connection, this example uses obj_conn


dim sql_tbl_1
dim rst_tbl_1
dim arr_tbl_1

dim sql_tbl_2
dim rst_tbl_2
dim arr_tbl_2

dim a

set rst_tbl_1 = server.createObject("ADODB.Recordset")
set rst_tbl_2 = server.createObject("ADODB.Recordset")

sql_tbl_1 = "SELECT fld_name_you_want FROM tbl_your_table1 "
sql_tbl_2 = "SELECT fld_name_you_want FROM tbl_your_table2 "

rst_tbl_1.open sql_tbl_1,obj_conn

arr_tbl_1 = rst_tbl_1.getrows

rst_tbl_1.close

set rst_tbl_1 = Nothing

rst_tbl_2.open sql_tbl_2, obj_conn

arr_tbl_2 = rst_tbl_2.getrows

rst_tbl_2.close

set rst_tbl_2 = Nothing

response.write "<INPUT type = 'SELECT' name = 'sel_name_you_choose_1'>"

for a = 0 to ubound(arr_tbl_1,2)

  response.write "<OPTION value = ' " & arr_tbl_1(0,a) & " '>" & arr_tbl_1(0,a) & "</OPTION>"

next 'a

response.write "</SELECT>"

response.write "<INPUT type = 'SELECT' name = 'sel_name_you_choose_2'>"

for a = 0 to ubound(arr_tbl_2,2)

  response.write "<OPTION value = ' " & arr_tbl_2(0,a) & " '>" & arr_tbl_2(0,a) & "</OPTION>"

next 'a

response.write "</SELECT>"

Note - when I fill a select box, I usually want to things for each option - a lable, and a value.

To do this, change your sql to ..

sql_tbl_1 = "SELECT fld_for_value, fld_for_label FROM tbl_your_table1 "

and the string to build the option to..

response.write "<OPTION value = ' " & arr_tbl_2(0,a) & " '>"
response.write arr_tbl(1,a) & "</OPTION>"

Hope that makes sense, let me know if I may clarify in any way.

This example uses getrows instead of stepping through a recordset, as it's cleaner and faster.




 

by: Programming_GalPosted on 2003-06-12 at 21:43:47ID: 8714805

<html>
<body>
<form name="form1" method="post" action="submit.asp">
<select name="select">
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open(Server.Mappath("northwind.mdb"))
set rs = Server.CreateObject("ADODB.recordset")
rs.Open "Select * from Customers", conn

do until rs.EOF
%>
<option value="<%=rs("id")%>"><%=rs("Name")%></option>
<%
    rs.MoveNext
loop

rs.close

%>
</select>
<select name="select2">
<%
set rs2 = Server.CreateObject("ADODB.recordset")
rs2.Open "Select * from CustAnother", conn

do until rs2.EOF
%>
<option value="<%=rs2("id")%>"><%=rs2("Name")%></option>
<%
    rs2.MoveNext
loop

rs2.close

conn.close
%>
 </select>
  <input type="submit" name="Submit" value="Submit">
</form>
</body>
</html>

 

by: markhoyPosted on 2003-06-13 at 02:36:00ID: 8716046

there are plenty of examples on www.atgconsulting.com (3 linked boxes, can be added to do 5)

 

by: amitvjogPosted on 2003-06-17 at 01:55:21ID: 8738731

<html>
<body>
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open(Server.Mappath("northwind.mdb"))
'opening connection
set rs = Server.CreateObject("ADODB.recordset")
set rs = conn.execute("Select * from Customers")
'opening recordset for first select
%>

<form name="form1" method="post" action="submit.asp">
<select name="select">
<%If not rs is nothing then%>
 <%if not rs.eof then%>
  <%while not rs.eof%>
   <option value="<%=rs("id")%>"><%=rs("Name")%></option>
  <%rs.movenext%>
  <%wend%>
 <%end if%>
<%end if%>
</select>
<%if not rs is nothing then set rs = nothing %>
<%' Destroying rs once it is used%>
<select name="select2">
<%
set rs2 = Server.CreateObject("ADODB.recordset")
set rs2 = conn.execute("Select * from CustAnother")
' Creating and opening another recordset for second select
if not rs2 is nothing then
 if not rs2.eof then
  while not rs2.eof%>
<option value="<%=rs2("id")%>"><%=rs2("Name")%></option>
<%
   rs2.MoveNext
   Wend
 end if
end if
if not rs2 is nothing then set rs2 = nothing
if conn.state = adstateopen then conn.close
if not conn is nothing then set conn = nothing
' destroying rs2 as well as conection object when its use is done
%>
</select>
 <input type="submit" name="Submit" value="Submit">
</form>
</body>
</html>

20120131-EE-VQP-002

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