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

foreach loop, assistance request
I would like some guidance on the usage of foreach as I try to parse through a large database and wh

Specific name typed, specific image shown on html page
Hello,

Fairly new to PHP and was curious if someone might know how to solve a fairly simple r

InternetOpenUrl() Invalid cert
Hi all,

Does anyone know how to prevent calls to InternetOpenUrl() from failing with erro

import table with dependency
Hi

What is the best way to import table back which has dependency?

SQL> cre

Format String help
I have a textbox where a person enters an application number. the application number is 10 characte

help connecting a form to php and then emailing the form
Ok. So, I made a form, and I need help to where when submitted, I get an email with the submitted de

calendar dates and hours compare problem
i have a calendar in wordpress, everything works great except that i can make 2 meetings at the same

how make 2 column in table with data tybe long row
hi every one

I want make in my table 2 column with data tybe long raw

how thi

Display Database
I need to create a shopping cart. I found this code online: http://conceptlogic.com/jcart/
Unfort

Putting double spaces instead of single spaces
Im looking at trying to replace all single spacing between fields with double spacing

At pres