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

Simple Scraper... Weird Output
Okay, maybe I just need a Blue Monster and some sleep, but....

I'm scraping a ringtone site

Curl & sessions PLS HELP
Hello,

I have a problem with curl and sessions and i will try to explain the best i could.

problem in program for counting no of chars using pointers
Hi all, I was trying to make a program which counts number of chars in a string using concpt of poin

PDO returns erroneous columns from within pdt
Hi All,

This is a truly weird behavior:
When using a simple pdo fetch, erroneous columns a

Question about ShowWindow()
Hello....

I'm struggling with sumpin, and I hope y'all can help.

I've got a CFormView

I need an iframe that calls up a different page according to the date
hi

I don't know any php (only html) and I urgently need to do the following:

I need a

fire away
i launched about 4 months ago as a lagit co. i have 2 paying clients, 1probono, 1 side progect, and

Mysterious Timeouts
I've deployed a few simple AJAX-enabled web page to a local server that is accessed through the Inte

Limiting checkboxes?
Hi guys,

I have this code: Code: if(isset($_POST['selected'])) {
foreach($_POST['selec

insert quotes
Hi,

I have an output like this:
Code: john,18,Cancer
How can I change this to
Code: