unable to add meta data from code behind in asp.net

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Hi ,
im unable to add meta data keywords , descriptions , etc in page from code behind.
im getting this error :

XML

The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

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.Web.HttpException: The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

while the following is the code :

HtmlMeta tag = new HtmlMeta();
tag.Name = "description";
tag.Content = "My description for this page";
Header.Controls.Add(tag);

i have also tried using page.metkeywords , page.header.keyword..
but getting same error

Posted 30-Apr-12 8:21am

shanalikhan

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Leonardo Paneque · Answer 1 · 2012-04-30T09:22:00

Assuming your page does not have a masterpage, you can just use it like this:

C#

Header.Keywords = "key1, key2";
      Header.Controls.Add(new HtmlMeta(){Name = "description",Content = "my description"});

and that will actually render:

XML

<head><title>
</title>
<meta name="description" content="my description" /><meta name="keywords" content="key1, key2" />
</head>

you need the header with runat="server" for this to work. if you have a master page you need to do it from there.

but I think your error is about something else.

shanalikhan · Answer 2 · 2012-05-01T07:43:00

Solution 2

used <%# instead of <%= in referencing urls in master pages

Posted 1-May-12 7:43am