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

Using unserialize()
Hi there.

I have some data in my database that is serialized.

e.g.

a:2:{i:0

Weird problem with SELECT command..Help!
Hi!

It seems I'm having a really weird problem with SQL SELECT command....I have table into a

Paypal
Hi all,

I have an advanced basic knowledge of php

I want to try something new for a s

A href problem under php
Hello...

I tried to explain the issue in an earlier post.. but was not clear enough....

Retail terminologys not been altered after activing Retail System
Hi, All

After I active Retail System via TCode SWF5, the terms does not been changed, th

Select all entries from database that include a phrase
I have a database of clubs - one of the categories is meeting time and place
I would like to have

problem with php server update from mid 2009
Hi,

I have this navigation menu on 2 websites which used to work just fine. After a recent up

mod_rewrite.c on windows ??
why it's not working on windows while it's working on other hosts???

this is the code i got

Track downloads' status
Hello,

I need to make somehow, some system, to track whether downloads are completed or faile

Php script to read msword file
hi,

I need to read a msword file and i want to print the contents in that word file.

i