StringWriter writer = new StringWriter();
                using (var memoryStream = new MemoryStream())
                {
                    EO.Pdf.Runtime.AddLicense(
                                "my license key");
                    using (FileStream file = new FileStream(@"E:\file.pdf", FileMode.Create, System.IO.FileAccess.Write))
                    {
                        var document = new PdfDocument();
                        HttpContext.Current.Server.Execute("Sample.html", writer);
                        HtmlToPdf.ConvertHtml(writer.ToString(), document);
                        writer.Flush();

                        document.Save(memoryStream);
                        memoryStream.Seek(0, SeekOrigin.Begin);
                        byte[] bytes = new byte[memoryStream.Length];
                        memoryStream.Read(bytes, 0, (int)memoryStream.Length);
                        file.Write(bytes, 0, bytes.Length);
                        file.Close();
                        memoryStream.Close();
                    }
                }