private void RenderTimerValue(System.Web.UI.HtmlTextWriter writer)
{
StringBuilder sb = new StringBuilder();
sb.Append(@"<div style=""color:#fff;background:#008;font-weight:bold,padding:2px"">");
//this.Cacheable && this.CanCache
sb.Append(String.Format("Execution time of the current page was <b>{0:F10}</b> seconds.", _timer.Elapsed.TotalSeconds));
sb.Append(@"</div>");
writer.Write(sb.ToString());
}