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

DateObject and Nulls
Hi all,

I have an array mapped to a value object. One of the items in the array is a PHP Date

Multithreading design
Hi

I have come up with a Singleton class that manages a pool of database connections. Basical

MySql timezone
Code: $sql = "SELECT *, date_format(date, '%m/%d/%Y at %I:%i %p' )as date FROM comments WHERE t

Nested (echoed) php running wrong script
Got a problem with a php website I'm creating.

In a nutshell, the first page is entirely html

User information
Hi All,
By using t-code SUIM we get all the user details,if suppose we donot have permission t

I am stumped
OK. Here is what I am trying to do. I have the conditions set, and if the conditions are met, I want

$variable = $variable
Hello

Sorry if this is a really simple question but I have run out of ideas. Is there a reall

Taking an HTML form and a PHP program and making it into one working file.
Hello,

So I would like to display everything INSIDE a specific directory. In other words, I

How to clone an SAP ECC using bacup tape on z/os?
We want to clone our production to a different SID using backup tape.

How to set pass login name from htaccess to php
When the user logs into my members page via htaccess, I'd like to retain the username so that I can