The Controls collection cannot be modified because the control contains code blocks

Hi;

I have the following error in aspx (not code behind):
"The Controls collection cannot be modified because the control contains code blocks"

I have no master pages. The error seems to appear:

<% if (Page.IsPostBack)
   { %>
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <% } %>

Open in new window


I need to add this doctype declaration if there is a postback but end up with the above error.

What to do? A placeholder but how?

Regards.
LVL 12
jazzIIIloveAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

jazzIIIloveAuthor Commented:
Problem is that even i check for postback in js. i cannot take it at the end of the page since i set the doctype as above. What should i do?

Can you share a code?

Regards.
0
käµfm³d 👽Commented:
Why would you need to add that only on a postback?
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
jazzIIIloveAuthor Commented:
You are absolutely right but it is a must in my case..

Regards.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
ASP.NET

From novice to tech pro — start learning today.