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

Preserving user-entered linebreaks
Hi, I'm building a web 2.0 thingy from scratch and I wanna display text which users input. It's all

Change log of Cost centre change in Plant maintenance order
Hi,
How to view Change log of Cost centre in Plant maintenance order. Not visible thru 'Docume

Slashes
Have a small problem and I'm not able to understand why I'm getting the results I'm getting... and i

Does deleting the spmlog directory critical?
Hi Everyone,

Please, hope you could help me. We're having problems with the SAP backup. I

Saving PHP output as a file
I wondered if anyone knows how to save the rendered output of a PHP script as a file?

I have

Images outside webroot
Im hopeing someone can help me with this because i cant figure it out.I have setup an ASP.NET websit

How to search for several parameters from objects in a database?
I have a database with lots of information about objects.
Now I would like to search for 4 or 5 p

New to Arrays
Hi I am new to PHP (a week and a half now) and I am just beginning to read about arrays. I understan

Where am I going wrong
Been trying to work this out for hours

I have two tables called 'Genres' and 'Films'. Genre

how can i expire the submitted page using session.
hi,
i'm new to php world.
i'm using "post" method.
when i submit it,data goes to