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/// <summary>
        /// Renders the partial view to string.
        /// </summary>
        /// <param name="context">The context.</param>
        /// <param name="partialViewName">Partial name of the view.</param>
        /// <param name="viewData">The view data.</param>
        /// <param name="tempData">The temp data.</param>
        /// <returns></returns>
        public static string RenderPartialViewToString(ControllerContext context, string partialViewName, ViewDataDictionary viewData, TempDataDictionary tempData)
        {
            ViewEngineResult result = ViewEngines.Engines.FindPartialView(context, partialViewName);

            if (result.View != null)
            {
                StringBuilder sb = new StringBuilder();
                using (StringWriter sw = new StringWriter(sb))
                {
                    using (HtmlTextWriter output = new HtmlTextWriter(sw))
                    {
                        ViewContext viewContext = new ViewContext(context, result.View, viewData, tempData, output);
                        result.View.Render(viewContext, output);
                    }
                }

                return sb.ToString();
            }

            return String.Empty;
        }