Page Redirect

**Peter Czurak** · May 1st, 2000, 04:27 AM

I have an ASP page that executes an ActiveX Dll which does database access. The process is lengthy (about 5 minutes). I added a progress bar, but this ActiveX dll (the progress bar) requires that the Response.Buffer to be set
to False, other wise you don't see the progress bar until my custom dll finishes the process - that's why I can't use Response.Redirect I get an error message if I do . At the end of the process I want to display another web page.

(I am running IIS4)

**OmegaJunior** · May 1st, 2000, 03:13 PM

Greetings,

Maybe you don't need to disable Response.Buffer if you try an other progress bar. Did you try client side JavaScript progress bars? I'm sure they can keep running no matter the Response.Buffer setting.

I guess, the crux here is using client side tools, whilst waiting for a server side event. Client side tools don't interfere with server side code (at least, they shouldn't).

Just pointing in a direction here... :)

May 6th, 2000, 03:44 AM

OK, don't know if this will work with your project but here's a test project(this one doesn't use a progress bar but maybe you can hack the script to do it...) :

I created a dll that wastes time, literally. This is to somewhat simulate the amount of time your database component takes to do it's thing.

Right click and save the component from the following link if you want:
http://www.panteravb.com/data/Timer.dll

Project Type: dll
Project Name: Timer
Class Name: Wait

Code:

Option Explicit

Public Function Interval(ByVal intSeconds As Integer) As Boolean
    Dim dtStopTime As Date
    dtStopTime = DateAdd("s", intSeconds, Now)
    Do While Now < dtStopTime
        'nothing
    Loop
    Interval = True
End Function

you can also do this through vbscript in the asp page but i wanted to use a dll to more closely simulate your environment.

I'll list the code for the three files you need, one is the default.asp which accepts how long you want your process to take(i.e. how long you want to simulate your database functions take).

You submit to your splash page which has a meta tag redirect that sends your info to the processing page. So long as your processing page does not send any data back to the browser the splash page remains in the browser waiting for the next page to load.

default.asp

Code:

<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
</HEAD>
<BODY>

<script language="javascript">
function Validate() {
	var objForm = document.forms["test"]
	if (objForm["interval"].value == ""){
		alert ("Please enter the length of time you want the processing page \nto take before returning to the this page again.")
		objForm["interval"].focus()
		return false
	}

	return true
		
}

</script>


<form name="test" onsubmit="return Validate()" method="post" action="splash.asp">
	<table cellpadding="0" cellspacing="0" border="0">
		<% if trim(request("msg")) <> "" then %>
		<tr>
			<td align="left" colspan="2">
				<FONT SIZE="2" FACE="arial, helvetica" color="#ff0000"><b><%= trim(request("msg")) %></b></font>
			</td>
		</tr>
		<% end if %>
		<tr>
			<td>How long do you want the processing page to take?</td>
			<td><input size="4" maxlength="2" type="text" name="interval" value=""></td>
		</tr>
		<tr>
			<td><input type="submit" value=" Start Processing "></td>
			<td> </td>
		</tr>
	</table>
</form>

</BODY>
</HTML>

splash.asp

Code:

<meta http-equiv="Refresh" content="1; URL=xt_process.asa?interval=<%= trim(request("interval"))%>">
<html>
<body background="/images/bground.gif" bgcolor="#ffffff" text="#000000" marginheight="0" topmargin="0">
<b>Please wait while we do some processing, this may be a few minutes...</b>
</body>
</html>

xt_process.asa

Code:

<%
	Response.Buffer = true
	dim objWait
	set objWait = Server.CreateObject ("Timer.Wait")
	objWait.Interval trim(request("interval"))
	set objWait = nothing
	Response.Redirect "default.asp?msg=" & server.URLEncode ("Processing Complete")
	
%>

**Peter Czurak** · May 7th, 2000, 11:42 PM

First of all I would like to thank you for all your time trying to help me. All though your solution does not work for my current problem I have some other projects that this solution will work.

The solution does not work on IE4. I get an error message "The Page Can Not Be Displayed" after few minutes. It works fine on IE5.01 and Netscape or if I lower the time to few seconds.

Thanks

Peter
[email protected]

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