Controls contain code blocks (I .e.), so you cannot modify the control set for exception handling.

Note:An error occurred while executing the current Web request. Check the stack trace information to learn about this error andCodeDetailed information about the cause of the error.

Exception details:System. Web. httpexception: the control contains code blocks (<%... %>), so the control set cannot be modified.

Source error:

An unhandled exception is generated during the execution of the current Web request. You can use the following exception stack trace information to determine the cause and location of the exception.

Stack trace:

[Httpexception (0x80004005): controls contain code blocks (namely, <%... %>), so the control set cannot be modified.] System. Web. UI. controlcollection. Add (control child) + 2108047 Ajaxcontroltoolkit. scriptobjectbuilder. registercssreferences (Control) + 762 Ajaxcontroltoolkit. extendercontrolbase. onload (eventargs e) + 64 System. Web. UI. Control. loadrecursive () + 47 System. Web. UI. Control. loadrecursive () + 131 System. Web. UI. Control. loadrecursive () + 131 System. Web. UI. Control. loadrecursive () + 131 System. Web. UI. Control. loadrecursive () + 131 System. Web. UI. Control. loadrecursive () + 131 System. Web. UI. Page. processrequestmain (Boolean includestagesbeforeasyncpoint, Boolean includestagesafterasyncpoint) + 1436

"/" Application Program Server error.

Control contains code blocks (that is, <%... %>), so the control set cannot be modified.

 

 

Search and find the cause:

When you use a topic, the control contains a code block (namely, <%... %>). Therefore, you cannot modify the control set error because of the following error:

Control contains code blocks (that is, <%... %>), so the control set cannot be modified. Remove the code and implement the functions in the code.
<% =... %>
The cause of this error is that the Code similar to this is used in

Put the script <% =... %> used in the head into the body, and it will be OK.

Source: http://www.cnblogs.com/mczhu/archive/2008/08/20/1272063.html

I found that my main. Master has:

<Title> ** Management System </title>
<SCRIPT src = "<% = getserveruri () %> scripts/Main. js" type = "text/JavaScript" Language = "JavaScript"> </SCRIPT>

The above is what I transferred from the Internet,

Because I use a topic, I cannot remove the head's runat = server,

I had to put the JS Code and functions originally placed in the head part (using <%> to access background variables and resource files) to other parts of the page.

For example, you can process the footer part.