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

present value of sequence?
Hi

Please help me to find out the present value of sequence?

Thanks

simple php table loop
Hi all,

I've the following code

<?php // Create category options

Undefined Variable: PHP_SELF, pls help
Hi,

Im a newbie on PHP / MySQL programming and Im running a script to search one field on my

DOMDocument
Hello All,

I need to take an XML document, modify some of the nodes in it and then perform a

Vertical Alligning - Not working in 1 cell?
<?php

echo "<table id="valign" width="60%" style=

php problem?
I don't think I'm stupid, but maybe I am.

I am working on a sit for a friend I am try to put

How to change Time Zone
HI
I want to change the time zone of the server to another country.How can do that?

Thanks

Why is my row count 0?
Here's the MySQL query i'm running. It basically pulls data from 2 tables based on some data passed.

A rank users order by points
I want to make an insert from table 'rank' , with number (rank) from the cod blow, to fild users.ran

Really need helps regarding Pagination with Sort
I need someone helps regarding pagination problem...i actually want to make my page limited to let s