Adding html to a placeholder control on the fly
<p>I am a generic markup which I load at runtime froma file as follows:</p>

<pre><code>&lt;div id="pagewidth" &gt;
&lt;div id="header" &gt; Head &lt;/div&gt;
        &lt;div id="wrapper" class="clearfix" &gt; 
        &lt;div id="twocols" class="clearfix"&gt; 
            &lt;div id="column2" &gt; Main Content Column &lt;/div&gt;
            &lt;div id="column3" &gt; right Column &lt;/div&gt;
        &lt;/div&gt; 
        &lt;div id="column1" &gt; Left Column &lt;/div&gt;
</code></pre>

<p>
     Footer 
    
    </p>

<p>I want to add this to a place holder control in asp.net web page. How do I do it?</p>
