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

include function being weird?
I have a very simple system to grab an IP outputted by a PHP file.. (for a project I have) but it ou

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.<

Deleting pointers froms vector?
Hi. I have a vector filled with pointers and I want to delete the pointers. I could do a loop and do

Output Buffering question
Hi all,

I've been trying to wrap my head around output buffering. So far I've found tons of

Simultaneous select/update/insert
Hi

How would I need to go about when 2 users update a single row simultaneous? And how would

how to get different value in second view of webdynpro?
hello guys,

In ABAP webdynpro I am trying to create one application having two views.

search query in mysql in php problem
my search query wont work, i know, that my codes are correct.please help

Code: [Select]&l

How would I protect......
I have a from, actually, a good amount of forms. How can I make it so you can't type the characters:

Find only certain URLs from page ... regex (semi-complete script)
Hi guys,

What I need to do is take a page & extract all the URLs from the page &a

Accessing element of object array
Hello

My object looks like this:


Array ( [0] => User Object ( [id] =>