protected override void OnPreRender(EventArgs e)
    {
        if (StopProcessing)
        {
            // Do nothing
        }
        else
        {
            if (PortalContext.ViewMode.IsLiveSite() && (CacheDependencies != ""))
            {
                base.OnPreRender(e);

                // Use default cache dependencies
                if (UseDefaultDependencies)
                {
                    DocumentContext.AddDefaultOutputCacheDependencies();
                }

                // More than one dependency is set
                string[] dependencies = CacheHelper.GetDependencyCacheKeys(CacheDependencies);
                CacheHelper.AddOutputCacheDependencies(dependencies);
            }
        }
    }