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Editorial Team
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Asked: 2026-05-13T17:37:16+00:00

I’m trying to use the Response.Write() method to dynamically insert content in the <

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I’m trying to use the Response.Write() method to dynamically insert content in the < head > section of an aspx page. I need to inject a string value from a property on a code-behind object which is a link to my CSS file. However, it is not being processed properly at run time. The object is public on the class and is hydrated in the Page_Load() event. Down in the body of the page I can successfully inject other properties from the Corpoartion object with no problem at all.

Why does this not work in the < head > section?

This is the part that does not expand correctly:

<link href="<%= Corporation.PageStyleSheet %>" rel="stylesheet" type="text/css" />

Here is the entire < head > section:

<head runat="server">
    <title></title>
    <link href="<%= Corporation.PageStyleSheet %>" rel="stylesheet" type="text/css" />
    <script language="JavaScript" type="text/JavaScript" src="cntv_menu.js"></script>
    <script language="JavaScript" type="text/JavaScript" src="cntv_category.js"></script>   
</head>

What is the reason that this will not expand properly?

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1 Answer

  1. Editorial Team

    You can’t use <%= %> inside a runat="server" tag, which your <head> tag is.

    You can either change it to <%# %> and DataBind to it in the code-behind, or you can make the link tag runat="server", give it an id and assign the attribute from the code behind.

    See this answer, which goes into the details.

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