public static string ParseRazor(HttpContext context,   string csHtmlVirtualPath, object model = null)  {   string fullpath = context.Server.MapPath(csHtmlVirtualPath);//將虛擬路徑轉換為絕對路徑   string cshtml = File.ReadAllText(fullpath); //將整個cshtml代碼讀取出來   string cacheName = fullpath + File.GetLastWriteTime(fullpath);//返回上次寫入指定文件或目錄的日期和時間。   string html = Razor.Parse(cshtml, model, cacheName);   return html;  }  /// <summary>  /// 直接將讀取的cshtml代碼轉換完后，直接返回給客戶端  /// </summary>  /// <param name="context"></param>  /// <param name="csHtmlVirtualPath"></param>  /// <param name="model"></param>  public static void OutputRazor(HttpContext context,   string csHtmlVirtualPath, object model = null)  {   string html = ParseRazor(context, csHtmlVirtualPath, model);   context.Response.Write(html);      }