public void FireMissing()
{
//Fire the event (for default image redirection, etc)
conf.FireImageMissing(sender, context, new UrlEventArgs(this.RewrittenVirtualPath, new NameValueCollection(this.RewrittenQuery)));
//Remove the image from context items so we don't try to write response headers.
context.Items[conf.ResponseArgsKey] = null;
Performance.GlobalPerf.Singleton.IncrementCounter("postauth_404_");
}
