Dynamic updates

Dev880

I need to know if I should use asp.net or Java for this. I would like to use
asp in general.

I need to have a function check to see if a variable is true or false and
update an icon. But I want it to either check when updated or every 3
seconds. I suppose it has to be somewhat client side scripting but is there a
way around this. As of now I use IFrames whith a refresh of 10 seconds, any
less will cause it to timeout. I kind of want it real-time or very near. It's
kind of like a status page for information in a database. Any suggestions?

Thanks

Jul 21 '05 #1

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1067

Ray Costanzo [MVP]

<html><body onload="checkImage();">
<script type="text/javascript">
function checkImage() {
document.images['x'].src='image.asp';
window.setTimeout('checkImage()',300);
}
</script>
<img name="x" src="">
</body>
</html>
Where image.asp looks like:

<%
If Second(Time) Mod 2 = 0 Then
sImage = "even.gif"
Else
sImage = "odd.gif"
End If
Response.Redirect sImage
%>

Ray at work

"Dev880" <De****@discussions.microsoft.com> wrote in message
news:D5**********************************@microsof t.com...

I need to know if I should use asp.net or Java for this. I would like to
use
asp in general.

I need to have a function check to see if a variable is true or false and
update an icon. But I want it to either check when updated or every 3
seconds. I suppose it has to be somewhat client side scripting but is
there a
way around this. As of now I use IFrames whith a refresh of 10 seconds,
any
less will cause it to timeout. I kind of want it real-time or very near.
It's
kind of like a status page for information in a database. Any suggestions?

Thanks

Jul 21 '05 #2

Ray Costanzo [MVP]

Whoops. Make that 3000, not 300 in setTimeout. :]

Ray at work

"Ray Costanzo [MVP]" <my first name at lane 34 dot commercial> wrote in
message news:uo**************@TK2MSFTNGP12.phx.gbl...

<html><body onload="checkImage();">
<script type="text/javascript">
function checkImage() {
document.images['x'].src='image.asp';
window.setTimeout('checkImage()',300);
}
</script>
<img name="x" src="">
</body>
</html>
Where image.asp looks like:

<%
If Second(Time) Mod 2 = 0 Then
sImage = "even.gif"
Else
sImage = "odd.gif"
End If
Response.Redirect sImage
%>

Ray at work

"Dev880" <De****@discussions.microsoft.com> wrote in message
news:D5**********************************@microsof t.com...
I need to know if I should use asp.net or Java for this. I would like to
use
asp in general.

I need to have a function check to see if a variable is true or false and
update an icon. But I want it to either check when updated or every 3
seconds. I suppose it has to be somewhat client side scripting but is
there a
way around this. As of now I use IFrames whith a refresh of 10 seconds,
any
less will cause it to timeout. I kind of want it real-time or very near.
It's
kind of like a status page for information in a database. Any
suggestions?

Thanks

Jul 21 '05 #3

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