private byte[] MakePdf(string html)
 {
     try {
         var prince = new Prince(HttpContext.Current.Server.MapPath("~/CommandLine/PrinceEngine/bin/prince.exe"));
         prince.SetLicenseFile(HttpContext.Current.Server.MapPath("~/CommandLine/PrinceEngine/license/license.dat").Replace("\\", "/"));
         //prince.SetLicenseFile("../license/license.dat");
         prince.SetHtml(true);
         //prince.SetFileRoot(tempPath.EndsWith("\\") ? tempPath.Substring(0, tempPath.Length - 1) : tempPath);
         prince.SetLog(HttpContext.Current.Server.MapPath("~/App_Data/Blobs/prince.log"));
         using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(html))
         {
             Position = 0
         }) {
             using (var pdf = new MemoryStream()) {
                 prince.ConvertMemoryStream(ms, pdf);
                 return(pdf.ToArray());
             }
         }
     } catch (Exception ex) {
         Debug.WriteLine(ex.Message);
         return(null);
     } finally {
     }
 }