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

How to get exact 3 moths post date from today date using javascript
How to get exact 3 moths post date from today date using javascript
Please help

Remove Rows From Database ad
Hi All,

I have this:

Code: [Select]<?php
session_start();
include('../com

links using header()
Hi All

I'm not sure where to ask for help on this but I hope someone can offer some. I'm at

Need help making a blockquote and line items conditional
I have some code I bought a few years ago that allows my clients to update content on their site usi

Javascript using window.location seems to lose state
Not sure what forum so let me know if I'm in the wrong place. I have a main window with a ajax grid

Help with syntax
Hi all!

The $bridge variable is not getting passed while it is contained in the line below:

Multiple WHILE loops help
Hi there. I'm writing an application that is pulling and displaying results for real estate listing

ereg_replace()
Basically what i need to do is

$title = "This Suck's"

$striped = ereg_repl

button help
i originally had this but realised it is much easier to have a button.

Code: <?php

Getting number of affected rows in SQLPLUS..
Hi everyone,
I have a shell script where i am invoking sqlplus, running a query and saving t