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

While Problem
i am having a problem with a while statement here is the code
Code: [Select]<?php
sess

C problem struct and string
Hi guys,

This is my first post and I'm hoping the experts here can help me solve my problem.<

PHP Function Page Advice
Hi All, I am quite new to PHP and Javascript but have written an Online Shop (Mainly for Fun and edu

Procedural to OOP
ohn Kleijn said that to avoid writing "crappy code", we should learn OOP and common OO pri

need to add "sizes" to shopping cart
Hey guys, I am trying to figure out a way to add a "size" selector on to this bit of code.

Socket Server Response Headers
Earlier I had a post about my Socket Server, I wasn't able to get it to connect, now I can

I

Data type mismatch
Hi,
I am migrating data from algol to c.I mapped real datatype in algol to double datatype in

Question about GD library
I am trying to make an image that shows a random quote from my database.


However I want t

session variable problem
Session variable is not working in Fire fox i am getting null value but it is working fine in IE.

Creating XML with php
I need to creat an XML with php and have successfully produced a valid output.
The problem I hav