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POHow can I get the content of an asp:placeholder into a variable that I can apply an xml transform on?
 

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  1. POHow can I get the content of an asp:placeholder into a variable that I can apply an xml transform on?
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    <p>How can I get the content of an asp:placeholder into a variable that I can apply an xml transform on?<br /> <br /></p> <h3>Background</h3> <p>I am trying to customise the layout of a .NET web application. It's an enterprise product that allows me to add/remove blocks of content in ascx files, and change css properties. I don't have access to any CodeBehind files (i.e the .cs source code) but I can possibly write my own .cs's if I know how to add those to the .ascx file. However, the actual content stems from<code>&lt;asp:placeholders&gt;</code> so we build up the page by adding/removing calls to place holders.</p> <p><strong>The overall aim is to replace the html tables that the place holders generate with e.g. <code>&lt;div&gt;</code> so that the application can be responsive.</strong> </p> <h3>Example</h3> <p>An example use of a place holder is </p> <pre><code>&lt;asp:PlaceHolder ID="TreeHead" runat="server"&gt;&lt;/asp:PlaceHolder&gt; </code></pre> <p>which generates the output</p> <pre><code>&lt;table id="loginBox" style="padding: 2px; margin: 0px;" cellpadding="2"&gt; &lt;tr&gt; &lt;td&gt;&lt;label for="LM_1"&gt;Please enter your username&lt;/label&gt;&lt;/td&gt; &lt;td&gt;&lt;input name="LM$1$" type="text" id="LM_1" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;label for="LM_2"&gt;Please enter your password&lt;/label&gt;&lt;/td&gt; &lt;td&gt;&lt;input name="LM$2$" type="password" id="LM_2"/&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </code></pre> <p>I want to convert it to something like this:</p> <pre><code>&lt;div id="loginBox"&gt; &lt;div class="row"&gt; &lt;div class="element"&gt;&lt;label for="LM_1"&gt;Please enter your username&lt;/label&gt; &lt;/div&gt; &lt;div class="element"&gt;&lt;input name="LM$1$" type="text" id="LM_1" /&gt; &lt;/div&gt; &lt;/div&gt; &lt;div class="row"&gt; &lt;div class="element"&gt; &lt;label for="LM_2"&gt;Please enter your password&lt;/label&gt; &lt;/div&gt; &lt;div class="element"&gt; &lt;input name="LM$2$" type="password" id="LM_2"/&gt; &lt;/div&gt; &lt;/div&gt; </code></pre> <p></p> <h3>My idea is</h3> <ol> <li>Wrap the <code>&lt;table&gt;</code> in<code>&lt;xml&gt;&lt;/xml&gt;</code> tags</li> <li>Transform the table using an xslt </li> <li>Extract the resulting <code>&lt;div id="loginBox"&gt;&lt;/div&gt;</code> and output it</li> </ol> <p>I'm thinking that I can achieve this with some inline c# in the .ascx file, like</p> <pre><code>&lt;% string table = "&lt;xml&gt;" + &lt;asp:PlaceHolder ID="TreeHead" runat="server"&gt;&lt;/asp:PlaceHolder&gt; + "&lt;/xml&gt;"; %&gt; </code></pre> <p>This fails though as I belive any c# code needs to be in the <em>CodeBehind</em> file so I’m stuck. If I can get the table into a variable, then I can follow <a href="https://stackoverflow.com/questions/34093/how-to-apply-an-xslt-stylesheet-in-c-sharp">this example</a> to apply the transformation. I have found a couple of links (see below) that do something similar but I believe those require access to the Codebehind (i.e. *.cs) files </p> <ol> <li><a href="https://stackoverflow.com/questions/14321937/aspplaceholder-contents-to-string">asp:placeholder contents to string</a><br /></li> <li><a href="http://www.tomot.de/en-us/article/3/asp.net/create-a-control-in-the-codebehind-and-retrieve-its-rendered-output" rel="nofollow noreferrer">http://www.tomot.de/en-us/article/3/asp.net/create-a-control-in-the-codebehind-and-retrieve-its-rendered-output</a></li> </ol> <h3>Question</h3> <p>How can I get the content of an asp:placeholder into a variable that I can apply an xml transform on? <br /> <br /> Thank you for any help.</p>
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