Error:The Controls collection cannot be modified because the control contains code blocks (i.e. )

Question

0.00/5 (No votes)

See more:

Hi,

I am getting an error when using place holders like "<%=errmsgs[1]%>" in javascript. I used CalanderExtender ajax control. For validation of dates, I used javascript. Please help me to rectify this error.

Error Details:

C#

Exception Information : The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
Source Information : System.Web
Stack Information :
   at System.Web.UI.ControlCollection.Add(Control child)
   at AjaxControlToolkit.ScriptObjectBuilder.RegisterCssReferences(Control control)
   at AjaxControlToolkit.ExtenderControlBase.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Thanks in advance,
Janes

Posted 10-Dec-12 22:46pm

maajanes

Updated 10-Dec-12 22:48pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Rajesh Pandya · Answer 1 · 2012-12-11T18:53:00

Solution 1

Please use '#' instead of '=' for example use "<%#errmsgs[1]%>" instead of "<%=errmsgs[1]%>". And one more thing is add Page.Header.Databaind in your master page code file in page load event.

Hope this will work for you.

Posted 11-Dec-12 18:53pm

Rajesh Pandya

Updated 11-Dec-12 18:55pm

v2