Change href link in content place holder from C# code
<p>I have a content placeholder containing a link:</p>

<pre><code>&lt;asp:Content ID="Content5" runat="server"  contentplaceholderid="ContentPlaceHolder3"&gt;
&lt;a href= "../WOPages/WO_Main.aspx?WONum=12345"&gt;WorkOrder&lt;/a&gt;
</code></pre>

<p></p>

<p>and I would like to change the href querystring from code.  How do I find it to change it?</p>
