BuildManager.CreateInstanceFromVirtualPath returning null value
<p>why the value of <strong>display</strong> is null</p>

<pre><code> public IHttpHandler GetHttpHandler(RequestContext requestContext)
{
    var display = BuildManager.CreateInstanceFromVirtualPath(
                    _virtualPath, typeof(Page)) as IDisplay;
    return display;
}
</code></pre>

<p>the value of _virtualPath is '~/RegisterUser.aspx' of type string</p>
