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Inline code in head tag - ASP.NET

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旧巷少年郎
旧巷少年郎 2020-12-01 09:05

Is it possible to do something like this in a head tag, of master page, which has runatserver:
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7条回答
  • 闹比i
    2020-12-01 09:25

    The reason the output is being rendered like so:

    href="<%=Config.ResourcesDomain %>/images/style.css"

    Is because ASP.NET is treating the link as an HtmlLink control, and rendering the contents of the href attribute as a literal.

    This is a strange quirk of marking the head section as a server control, where certain elements are treated as server controls (even without being marked explicitly with the runat="server" attribute).

    Removing the quotations around the href attribute resolves the issue:

    href=<%= Config.ResourcesDomain %>/images/style.css

    Doing so stops the link element being treated as a server control, thus executing the code block and rendering the correct URL.

    However, the above writes the href value out without quotes. Using the following, will add the quotes to the link tag:

    href=<%= String.Format("'{0}'", Config.ResourcesDomain) %>/images/style.css

    Hope this helps.

    Edit

    Strangely, if you use double quotes for the href attribute, and include double quotes within the code block this also resolves the issue:

    href="<%= "" + Config.ResourcesDomain %>/images/style.css"

    However, none of the above are particularly elegant solutions, and setting the URL from the code behind is probably the way to go.

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  • 走了就别回头了
    2020-12-01 09:31

    change it to 

     <link rel="Stylesheet"  type="text/css" href='<%Response.Write(Config.ResourcesDomain); %>/images/style.css' />

    It should work

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  • 感动是毒
    2020-12-01 09:37

    Another solution I've found here: https://stackoverflow.com/a/5727996/368613 -- just place code inside PlaceHolder:

    <asp:PlaceHolder runat="server">
  ... your code with <%= %> tags ...
</asp:PlaceHolder>
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  • 孤城傲影
    2020-12-01 09:40

    Apparently data binding is required when using the inline tag "<%# %>". 

    <head id="Head">
    //Stuff with inline code
</head>

    Code Behind:

    protected void Page_Load {
    Head.DataBind();
}

    Regards

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  • 故里飘歌
    2020-12-01 09:42

    mark-up

    <head>
   <asp:Literal ID="litHead" runat="server" />
</head>

    code-behind:

    on page_load

    litHead.Text = "<link rel='Stylesheet'  type='text/css' href='" + Config.ResourcesDomain + "/images/style.css' />";

    Update: do this then

    <head runat="server">
    <%
        Response.Write("<link rel='Stylesheet'  type='text/css' href='" + Config.ResourcesDomain + "/images/style.css' />");
    %>
    <title></title>
</head>
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  • 慢半拍i
    2020-12-01 09:42

    Or do something like this:

    <head>
    <style type="text/css">
        @import "<%= ResolveUrl("~/content/styles.css") %>";
        @import "<%= ResolveUrl("~/content/print.css") %>" print;
    </style>
</head>
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