HOWTO: Populating a Combobox from Active Server Pages

ID: Q175426

The information in this article applies to:

SUMMARY

This article demonstrates how to load a ComboBox with records retrieved from a database. In this example we will create an Active Server Pages (ASPP page that connects to the Adventure Works database.


MORE INFORMATION

The code below demonstrates how to load values into an HTML list box: 


   <HTML>
   <BODY>
   <BR>This is an HTML ListBox<BR>
   <SELECT NAME="ListBox" SIZE=1>
   <% Set conn = Server.CreateObject("ADODB.Connection") %>
   <% conn.Open "DSN=AdvWorks"  ' connect to the database %>
   <% Set rs = conn.Execute("SELECT City FROM Customers") %>
   <% Do While Not rs.EOF  ' define the ListBox OPTIONs %>
      <OPTION VALUE="<%= rs("City") %>"> <%= rs("City") %>
      <% rs.MoveNext %>
   <% Loop %>
   <% rs.Close %>
   <% conn.Close %>
   </SELECT>
   </BODY>
   </HTML>

The code below demonstrates how to load values into an ActiveX ComboBox control. Be aware that this control must be installed and registered on your system in order for this sample to work correctly: 

   <%@ LANGUAGE="VBSCRIPT" %>
   <HTML>
   <BODY>
   <BR>This is an ActiveX ComboBox control<BR>
   <!-- insert the ActiveX control into the HTML page -->
   <OBJECT ID="ComboBox" WIDTH=96 HEIGHT=24
      CLASSID="CLSID:8BD21D30-EC42-11CE-9E0D-00AA006002F3">
   </OBJECT>
   <SCRIPT LANGUAGE="VBScript">
   <!--
   ' load the ActiveX control after the window has been loaded
   Sub Window_OnLoad()
      <% Set conn = Server.CreateObject("ADODB.Connection") %>
      <% conn.Open "DSN=AdvWorks"  ' connect to the database %>
      <% Set rs = conn.Execute("SELECT City FROM Customers") %>
      <% Do While Not rs.EOF %>
         ComboBox.AddItem("<%= rs("City") %>") ' Do an AddItem for
                                               ' each record
         <% rs.MoveNext %>
      <% Loop %>
      <% rs.Close %>
      <% conn.Close %>
   End Sub
   -->
   </SCRIPT>
   </BODY>
   </HTML>


NOTE: Use your browser to view these pages and the view the HTML source. This will give you a better understanding of what code was produced by ASP.


REFERENCES

For the latest Knowledge Base artices and other support information on Visual InterDev and Active Server Pages, see the following page on the Microsoft Technical Support site:

http://support.microsoft.com/support/vinterdev/

Additional query words: 


Keywords          : kbcode kbScript kbSQLServ kbVisID100 kbGrpASP 
Version           : WINDOWS:1.0; winnt:
Platform          : WINDOWS winnt 
Issue type        : kbhowto

Last Reviewed: May 27, 1999