public static UmbracoContext Get()
        {
            if(HttpContext.Current.Items["DbContext"] == null)
                HttpContext.Current.Items.Add("DbContext", new UmbracoContext());

            return (UmbracoContext) HttpContext.Current.Items["DbContext"];
        }

            var dispObj = HttpContext.Current.Items["DbContext"] as IDisposable;
            if(dispObj != null)
                dispObj.Dispose();

        protected void Application_EndRequest(object sender, EventArgs e)
        {
            var dispObj = HttpContext.Current.Items["DbContext"] as IDisposable;
            if(dispObj != null)
                dispObj.Dispose();
        }