is there a simple way to make a pop up box in ASP.NET appear?
<p>I tried using this example: <a href="http://www.asp.net/ajaxlibrary/AjaxControlToolkitSampleSite/modalpopup/modalpopup.aspx" rel="nofollow">http://www.asp.net/ajaxlibrary/AjaxControlToolkitSampleSite/modalpopup/modalpopup.aspx</a></p>

<pre><code>&lt;ajaxToolkit:ModalPopupExtender ID="MPE" runat="server"
TargetControlID="LinkButton1"
&lt;/ajaxToolkit:ModalPopupExtender&gt;
</code></pre>

<p>And try using </p>

<pre><code>MPE.Show(); 
</code></pre>

<p>on the C# side but I keep getting an error message: 
"The name 'MPE' does not exist in the current context" I really don't know why the C# side can't see the asp side.</p>

<p>I mean the popup doesn't have to use ajax but that's what I was currently trying at the moment.</p>
