Question

getting database data based on a selected value of a combobox

Asked by: brillox

the problem is to display data from an sql db table according to a selected value of a combobox on the same asp page.

Basically the table contains messages and messages categories. I need to populate the combobox with categories and then according to the selected category, retrieving and displaying the relevant messages.

I know how to populate the combobox, but I am blocked on the following part :-)

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Asked On: 2008-09-17 at 13:45:56ID23740298
Tags: classic asp
Topic: Active Server Pages (ASP)
Participating Experts: 1
Points: 0
Comments: 5

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Answers

by: efficaciousPosted on 2008-09-17 at 13:56:30ID: 22503590

can you just use an ID system of sorts to say that these child messages go to these categories

then its a simple WHERE clause addtion to the SQL

by: brilloxPosted on 2008-09-18 at 02:00:38ID: 22508925

actually categories is already the foreign key of the messages tables (1,2,3,4,5 etc) that refer to the category text. I cannot figure out how to fire the selected event of the listbox to trigger the recordset that should populate my dinamic table on the asp page ( I am use to .NET... never did classic asp before).

by: brilloxPosted on 2008-09-18 at 02:34:32ID: 22509097

I am using 2 forms on the same page. I can see the listbox with categories . The form action containing the listbox point to the same page. however I cannot get the selected value when I hit the button on formListbox in FormMessages.

I attached the whole asp code

'On Error Resume Next
 
%>
 
<%
'SCI_DC variables
   Dim TITLE, OPCODE, OPINFO	
	OPCODE = 1654 ' TO DO !! CHECK THE OPCODE IF IS RIGHT	
	TITLE = "SMS Manager"		
	OPINFO = NULL
%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title><%=TITLE%></title>
<meta name=vs_defaultClientScript content="VBScript">
<meta name=vs_targetSchema content="http://schemas.microsoft.com/intellisense/ie5">	
<SCRIPT language="JavaScript" SRC=../../../cdmcommon/javascript/formscript.js></SCRIPT> 
<link rel="stylesheet" type="text/css" href="../../../style/cdmstyle.css">		
</head>  
 
<BODY onload="Timeout()">
 
	<div style="float:left;width:100%;text-align:center;margin:0px auto;">
	<!-- #include file="../../../cdmcommon/header.asp" -->		
  </div>
 
<div id="content" >
<form method="post" action="ManageSMS.asp" runat="server" ID="FormListbox">
 <%      
	
   ' Declare our vars
   Dim ConnObj ' Connection object
   Dim CmdGetCategory ' Command Object 
   Dim ObjRsCategory 'Recordset
   
   
   
  '**************** START *******************************
 
' Establish connection to database (DB)
set ConnObj = Server.CreateObject("ADODB.Connection")
Connstring = Application.Contents.Item("Connection")
ConnObj.ConnectionString =  Connstring
 
' Create Command object we'll use to execute the SP
Set CmdGetCategory = Server.CreateObject("ADODB.Command")
 
'open the connection
if ConnObj.state = adStateClose then ConnObj.Open
 
 'Set our Command to use our existing connection
 CmdGetCategory.ActiveConnection = ConnObj
 
' Set the name and tell the Command object to the stored procedure name
CmdGetCategory.CommandText  = "SweetTalk_GetMessage_Categories"
CmdGetCategory.CommandType =adCmdStoredProc
%>
 
<div class="SweetTalkManageSMSDiv">
<p>&nbsp;</p>
<table borderColor="#cccccc" cellSpacing="1" cellPadding="1" width="100%" border="0" ID="TableEditSMS">
<tr>
<td style="text-align:right;">Category:</td>
<td>
<select ID="Categories" NAME="Categories">
 
<%
Set ObjRsCategory = CmdGetCategory.Execute
Do While Not ObjRsCategory.EOF
Response.Write("<option value=""" & ObjRsCategory.Fields("UID").Value & """  >" & ObjRsCategory.Fields("Descriptor").Value & "</option>")
ObjRsCategory.MoveNext
Loop
%>
</select>
<input type="submit" value="Load Messages" />
</td>
</tr>
</form>
 
<form method="post" action="SMSTextAddNew.asp" runat="server" ID="Form1">
<div class="SweetTalk_Navigation">
<p><a href="../patients.asp" title="Sweet talk Patient List">Sweet Talk Patient List</a></p>
<p>SMS Manager</p>
<p><a href=ManageSMS_Categories.asp title="SMS Categories Manager">SMS Category Manager</a></p>
<p><button type="submit" ID="Button1">Add New SMS Text</button></p>
</div><!-- end SweetTalk_Navigation -->
 
 <%      
	
   ' Declare our vars
   Dim cnnStoredProc ' Connection object
   Dim cmdGetMessage ' Command object
   Dim ObjRs ' RecordSet  
   
  '**************** START *******************************
 
' Establish connection to database (DB)
set cnnStoredProc = Server.CreateObject("ADODB.Connection")
Connstring = Application.Contents.Item("Connection")
cnnStoredProc.ConnectionString =  Connstring
 
Set ObjRs =Server.CreateObject("ADODB.Recordset")
 
' Create Command object we'll use to execute the SP
Set cmdGetMessage = Server.CreateObject("ADODB.Command")
 
if cnnStoredProc.state = adStateClose then cnnStoredProc.Open
 
 'Set our Command to use our existing connection
 cmdGetMessage.ActiveConnection = cnnStoredProc
 
' Set the name and tell the Command object to the stored procedure name
cmdGetMessage.CommandText = "SweetTalk_GetMessages"
cmdGetMessage.CommandType = adCmdStoredProc
 
'Run the stored procedure
set ObjRs = cmdGetMessage.Execute 
 
if (ObjRs.BOF and ObjRs.EOF) then
%>
<div class="SweetTalkManageSMSDiv">
 
	<table border=1 cellPadding=1 cellSpacing=1 width="100%" borderColor="#cccccc" ID="Table2">
	 <tr>
	 <th>NO RECORDS FOUND</th>
	</tr>
	</TABLE>	
</div>
<%else%>
<div class="SweetTalkManageSMSDiv">
 
<table border=1 cellPadding=1 cellSpacing=1 width="100%" borderColor="#cccccc" ID="TableSMS">
<tr>
<th>Action</th>
<th>Text</th>
<th class="Hidden">Category</th>
<th>Activated</th>
<th>Created</th>
<th>Amended</th>
</tr>
 
<tr><td colspan="2">selected item is: <% Request(Categories) %></td></tr>
 
 
<% Do While Not ObjRs.EOF %>
 
<tr>
<td class="SweetTalkSmsTdAction">
<a href="SMSTextUpdate.asp?UID=<%=Objrs.Fields("UID")%>&action=edit" title="Edit">Enable / Disable</a>
</td>
 
<td><%=ObjRs.Fields("Descriptor") %></td>
 
<td class="Hidden"><%=ObjRs.Fields("Category") %></td>
 
<td class="tdcentered">
 <%
	if objRs.Fields("Activated").Value = 0 then
	  response.Write("<img src=""../../../pictures/SweetTalkImages/action_delete.gif"" alt=""Enabled"" />")
	else
	 Response.Write("<img src=""../../../pictures/SweetTalkImages/action_check.gif"" alt=""Disabled"" />")
	end if
%>		
 
</td>
<td class="tdcenteredNoWrap">
<%
if ObjRs.Fields("CREATED") = "" or IsNull(ObjRs.Fields("CREATED")) then
Response.Write("<p>&nbsp;</p>")
else
%> 
 
<%=FormatDateTime(ObjRs.Fields("CREATED"),2)%>
 
<%
end if
 %>
 
</td>
<td class="tdcenteredNoWrap">
<%
if ObjRs.Fields("AMMENDED") = "" or  IsNull(ObjRs.Fields("AMMENDED")) then
Response.Write("<p>&nbsp;</p>")
else
%> 
 
<%=FormatDateTime(ObjRs.Fields("AMMENDED"),2)%>
 
<%
end if
 %>
</td>
</tr>
 
<%		
		' -- move to the next record
		objRs.MoveNext			
		Loop
%>
 
</table>
</div>
 
<%
end if
 
'close connection
if cnnStoredProc.state = adStateOpen then cnnStoredProc.Close
 
' Kill our objects
Set cnnStoredProc = nothing 
Set cmdGetMessage = nothing 
Set ObjRs = nothing
 
'if Err.number = 0 then
'do nothing otherwise Display Error information
'else
'Response.Redirect("../../../errorfiles/SweetTalkError.asp?ErrorPath=" & TITLE & "&ErrorNumber=" & Err.number & "&ErrorDescription=" & Err.Description )
'End If
 
%>

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by: brilloxPosted on 2008-09-18 at 02:36:18ID: 22509105

I am trying to display the selected value on line 144 of the attached code snippet

by: brilloxPosted on 2008-09-18 at 03:49:23ID: 22509450

Got it....

the button on the form does the post back, so all I ahd tyo do is to check if the selected category was empty then do nothing, otherwise, fire up the SP to get the messages by selected category id.

it works fine....

I've attached my code for other to have a look at, but I'll ask to get the points back.

Thanks for your help anyway.

<div id="content" >
 
<div class="SweetTalk_Navigation">
<form method="post" action="SMSTextAddNew.asp" runat="server" ID="Form_New_Message">
 
<p><a href="../patients.asp" title="Sweet talk Patient List">Sweet Talk Patient List</a></p>
<p>SMS Manager</p>
<p><a href=ManageSMS_Categories.asp title="SMS Categories Manager">SMS Category Manager</a></p>
<p><button type="submit" ID="Button1">Add New SMS Text</button></p>
</form><!--  Form_New_Message -->
</div><!-- end SweetTalk_Navigation -->
 
<form method="post" action="ManageSMS.asp" runat="server" ID="FormListbox">
 
<%
 ' Declare our vars
   Dim cnnStoredProc ' Connection object
   
   Dim CmdGetCategory ' Command Object 
   Dim ObjRsCategory 'Recordset
   
   Dim cmdGetMessage ' Command object
   Dim ObjRs ' RecordSet 
   
   Dim CmdGetAllMessages 'Command object
  
   DIm Param_Category 'sql parameter for selected category 
  
%>
 
<div class="SweetTalkManageSMSDiv">
<p>&nbsp;</p>
<table borderColor="#cccccc" cellSpacing="1" cellPadding="1" width="100%" border="0" ID="TableEditSMS">
<tr>
<td style="text-align:right;">Category:</td>
<td>
<select ID="Categories" NAME="Categories">
 
<%
' Establish connection to database (DB)
set cnnStoredProc = Server.CreateObject("ADODB.Connection")
Connstring = Application.Contents.Item("Connection")
cnnStoredProc.ConnectionString =  Connstring
 
' Create Command object we'll use to execute the SP
Set CmdGetCategory = Server.CreateObject("ADODB.Command")
 
'open the connection
if cnnStoredProc.state = adStateClose then cnnStoredProc.Open
 
'Set our Command to use our existing connection
 CmdGetCategory.ActiveConnection = cnnStoredProc
 
' Set the name and tell the Command object to the stored procedure name
CmdGetCategory.CommandText  = "SweetTalk_GetMessage_Categories"
CmdGetCategory.CommandType =adCmdStoredProc
Set ObjRsCategory = CmdGetCategory.Execute
Do While Not ObjRsCategory.EOF
Response.Write("<option value=""" & ObjRsCategory.Fields("UID").Value & """  >" & ObjRsCategory.Fields("Descriptor").Value & "</option>")
ObjRsCategory.MoveNext
Loop
%>
</select>
<input type="submit" value="Load Messages" />
</td>
</tr>
</table>
 
</form>
 
<!-- **************** LOAD MESSAGES BY SELECTED CATEGORY START ******************************* -->
<%  
if request("Categories")<> "" then
	' Establish connection to database (DB)
	set cnnStoredProc = Server.CreateObject("ADODB.Connection")
	Connstring = Application.Contents.Item("Connection")
	cnnStoredProc.ConnectionString =  Connstring
 
	Set ObjRs =Server.CreateObject("ADODB.Recordset")
 
	' Create Command object we'll use to execute the SP
	Set cmdGetMessage = Server.CreateObject("ADODB.Command")
 
	if cnnStoredProc.state = adStateClose then cnnStoredProc.Open
 
	'Set our Command to use our existing connection
	cmdGetMessage.ActiveConnection = cnnStoredProc
	 
	 
	' Set the name and tell the Command object to the stored procedure name
	cmdGetMessage.CommandText = "SweetTalk_GetMessage_By_Category"
	cmdGetMessage.CommandType = adCmdStoredProc
 
	' Create and add the required parameters to our Command object.
	Set Param_Category = cmdGetMessage.CreateParameter("@Category", adUnsignedTinyInt, adParamInput)
	Param_Category.Value = Request("Categories")
	cmdGetMessage.Parameters.Append Param_Category
 
	'Run the stored procedure
	set ObjRs = cmdGetMessage.Execute 
	
	'Run the stored procedure
	set ObjRs = cmdGetMessage.Execute 
 
		if (ObjRs.BOF and ObjRs.EOF) then
		%>
		<div class="SweetTalkManageSMSDiv">
 
			<table border=1 cellPadding=1 cellSpacing=1 width="100%" borderColor="#cccccc" ID="Table2">
			<tr>
			<th>NO RECORDS FOUND</th>
			</tr>
			</TABLE>	
		</div>
		<%else%>
		<div class="SweetTalkManageSMSDiv">
 
		<table border=1 cellPadding=1 cellSpacing=1 width="100%" borderColor="#cccccc" ID="TableSMS">
		<tr>
		<th>Action</th>
		<th>Text</th>
		<th class="Hidden">Category</th>
		<th>Activated</th>
		<th>Created</th>
		<th>Amended</th>
		</tr>
 
		<% Do While Not ObjRs.EOF %>
 
		<tr>
		<td class="SweetTalkSmsTdAction">
		<a href="SMSTextUpdate.asp?UID=<%=Objrs.Fields("UID")%>&action=edit" title="Edit">Enable / Disable</a>
		</td>
 
		<td><%=ObjRs.Fields("Descriptor") %></td>
 
		<td class="Hidden"><%=ObjRs.Fields("Category") %></td>
 
		<td class="tdcentered">
		<%
			if objRs.Fields("Activated").Value = 0 then
			response.Write("<img src=""../../../pictures/SweetTalkImages/action_delete.gif"" alt=""Enabled"" />")
			else
			Response.Write("<img src=""../../../pictures/SweetTalkImages/action_check.gif"" alt=""Disabled"" />")
			end if
		%>		
 
		</td>
		<td class="tdcenteredNoWrap">
			<%
			if ObjRs.Fields("CREATED") = "" or IsNull(ObjRs.Fields("CREATED")) then
			Response.Write("<p>&nbsp;</p>")
			else
			%> 
 
			<%=FormatDateTime(ObjRs.Fields("CREATED"),2)%>
 
			<%
			end if
			%>
	   </td>
	   <td class="tdcenteredNoWrap">
			<%
			if ObjRs.Fields("AMMENDED") = "" or  IsNull(ObjRs.Fields("AMMENDED")) then
			Response.Write("<p>&nbsp;</p>")
			else
			%> 
 
			<%=FormatDateTime(ObjRs.Fields("AMMENDED"),2)%>
 
			<%
			end if
		
		%>
</td>
</tr>
 
<%		
' -- move to the next record
	objRs.MoveNext			
	Loop
	
	end if 'if (ObjRs.BOF and ObjRs.EOF)
%>
 
</table>
<%
else
 
end if 'if request(Categories)is not null or request(categories)<> ""
 
'close connection
if cnnStoredProc.state = adStateOpen then cnnStoredProc.Close
 
' Kill our objects
Set cnnStoredProc = nothing 
Set cmdGetMessage = nothing 
Set ObjRs = nothing
 
'if Err.number = 0 then
'do nothing otherwise Display Error information
'else
'Response.Redirect("../../../errorfiles/SweetTalkError.asp?ErrorPath=" & TITLE & "&ErrorNumber=" & Err.number & "&ErrorDescription=" & Err.Description )
'End If
%>
 
 
<!-- **************** LOAD MESSAGES BY SELECTED CATEGORY END ******************************* -->
 
</div>

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getting database data based on a selected value of a combobox

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classic asp

Active Server Pages (ASP)

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