Timer control causing error

Posted on 16th Feb 2014 07:03 pm by admin

I recently decided to add a timer control to an existing page that uses AJAX on my site. As soon as I added the timer control and ran my app, I started getting the following error:Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Script controls may not be registered before PreRender.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:

[InvalidOperationException: Script controls may not be registered before PreRender.]
System.Web.UI.ScriptControlManager.RegisterScriptControl(TScriptControl scriptControl) +236
System.Web.UI.Timer.OnPreRender(EventArgs e) +75
System.Web.UI.Control.PreRenderRecursiveInternal() +77
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1360
I've been using AJAX on this page for months. Why is this timer control suddenly causing me to get a control validation error? Chopped down version of the front end code:1 2 3 4 5 6 The error occurs on page load. I don't get any compilation errors. Any thoughts?

Your Answer:

Login to answer

Other forums

scandir clients directory
hi,
how can i scandir the clients directory? i need a script that when i click a button it will u

Filling gaps in dates
So i'm doing a query for sales data and my return array looks like this

('date' => '20

Cache PHP Objects/Classes?
Does anyone have ideas about caching PHP objects using something like: http://memcached.org/

Select question
Hi,

First I would like to say that php is pretty new for me..
so please don't shoot me if

How could I combine these arrays??
Hello.. I'm trying to figure out a way to combine these first two arrays to get the last array..

how to populate a drop down box
Hi buddies!

PROCEDURE DOWNLOAD_REPORT_FORM (report_name varchar) is begin DOWNLO

tag inside php...
hi


Code: <?php
echo "<td width="$columnWidth%" align=&

How to set pass login name from htaccess to php
When the user logs into my members page via htaccess, I'd like to retain the username so that I can

Which PHP-Editor do you think is the best?
Hi everyone,
Myself Brian Anderson. For the last 2 years i have been working a

How to show next and prev records
Hi all,

Sorry if this is simple, i'm very new to php, well, any programming language actually