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POShould I be able to understand this ContentPlaceHolder behavior?
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  1. POShould I be able to understand this ContentPlaceHolder behavior?
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    copied!<p>My goal is to be able to define a class for the element in a child page. On my master page I have the following:</p> <pre><code>&lt;body class="&lt;myown:AttributePlaceHolder runat="server" ID="BodyCssClass"/&gt;"&gt; </code></pre> <p>The <code>AttributePlaceHolder</code> derives from <code>ContentPlaceHolder</code>, and just strips out any linebreaks and extra spaces from its content. The problem I will describe also occurs when changing the <code>AttributePlaceHolder</code> into a normal <code>ContentPlaceHolder</code> .</p> <p>Now the above stated piece of code doesn't work, and will end up in the following error:</p> <blockquote> <p>Cannot find ContentPlaceHolder 'BodyCssClass' in the master page '/Views/Shared/Site.Master', verify content control's ContentPlaceHolderID attribute in the content page</p> </blockquote> <p>When changing the above line of code into:</p> <pre><code>&lt;body class="&lt;% %&gt;&lt;myown:AttributePlaceHolder runat="server" ID="BodyCssClass"/&gt;"&gt; </code></pre> <p>It does work (note the added <code>&lt;% %&gt;</code>).</p> <p>It does the trick, just wondering if I'm missing something here.</p> <p>Just for the extra info, in my child pages I can write:</p> <pre><code>&lt;asp:Content ContentPlaceHolderID="BodyCssClass" runat="server"&gt;profile-edit someotherclass another-class&lt;/asp:Content&gt; </code></pre> <p>or even:</p> <pre><code> &lt;asp:Content ContentPlaceHolderID="BodyCssClass" runat="server"&gt;profile-edit someotherclass another-class &lt;/asp:Content&gt; </code></pre> <p>and it will be nicely printed out as:</p> <pre><code>&lt;body class="profile-edit someotherclass another-class"&gt; </code></pre> <p><strong>Edit</strong><br> As pointed out by Johan the following also works:</p> <pre><code>&lt;body class='&lt;myown:AttributePlaceHolder runat="server" ID="BodyCssClass"/&gt;'&gt; </code></pre> <p>Changes the double quotation marks into single ones.</p> <p>But than my html would also show up with single quotation marks. Call me crazy, but that just hurts me...</p> <p>I guess it has to do with the ASP.NET parsing engine, in that case should we call it a bug, or a "feature"?</p>
 

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