public byte[] ConvertHTMLToPDF(RequestTxEditor oRequest)
        {
            
            if (oRequest.TxContent == null)
                oRequest.TxContent = "<p>Content - Water mark </p>";

            // 
            string htmlcontent = oRequest.TxContent;   // content of the editor

            
            HtmlFormatProvider htmlProvider = new HtmlFormatProvider();
            Boolean IsParagraph = false;
            Boolean IsTable = false;
            Telerik.Windows.Documents.Flow.Model.Paragraph blockparagraph = null;
            Telerik.Windows.Documents.Flow.Model.Table blocktable = null;
            RadFixedDocument RFD = new RadFixedDocument();
            Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider pdfProvider = new Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider();
            Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider FixpdfProvider = new Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider();
            DocxFormatProvider docxProvider = new DocxFormatProvider();
            byte[] pdfBytes = null;
            RadFlowDocument document = htmlProvider.Import(htmlcontent);
            

            // Header HTML  
            if (oRequest.TxHeader == null)
                oRequest.TxHeader = "<p>Header</p>";

            if (oRequest.TxFirstPageHeader == null)
                oRequest.TxFirstPageHeader = "<p>Frist page Header</p>";

            if (oRequest.TxFooter == null)
                oRequest.TxFooter = "<p> Footer </p>";

            document.Sections.First().HasDifferentFirstPageHeaderFooter = oRequest.HasDifferentFirstPageHeader;

            Header defaultHeader = document.Sections.First().Headers.Add(HeaderFooterType.Default);
            Header firstHeader = document.Sections.First().Headers.Add(HeaderFooterType.First);
            Footer defaultFooter = document.Sections.First().Footers.Add();

            RadFlowDocument defaultHeaderDocument = htmlProvider.Import(oRequest.TxHeader);
            RadFlowDocument firstHeaderDocument = htmlProvider.Import(oRequest.TxFirstPageHeader);            
            RadFlowDocument tempfooterDocument = htmlProvider.Import(oRequest.TxFooter);
            
            RadFlowDocumentEditor editor = new RadFlowDocumentEditor(document);

            foreach (var block in defaultHeaderDocument.Sections.First().Blocks)
            {
                IsParagraph = block is Telerik.Windows.Documents.Flow.Model.Paragraph;
                IsTable = block is Telerik.Windows.Documents.Flow.Model.Table;
                if (IsParagraph)
                {
                    blockparagraph = block as Telerik.Windows.Documents.Flow.Model.Paragraph;
                    Telerik.Windows.Documents.Flow.Model.Paragraph clonedParagraph = blockparagraph.Clone(document);
                    defaultHeader.Blocks.Add(clonedParagraph);
                }
                else if (IsTable)
                {
                    blocktable = block as Telerik.Windows.Documents.Flow.Model.Table;
                    Telerik.Windows.Documents.Flow.Model.Table clonedTable = blocktable.Clone(document);
                    defaultHeader.Blocks.Add(clonedTable);
                }
            }

            if (oRequest.HasDifferentFirstPageHeader)
            {
                foreach (var block in firstHeaderDocument.Sections.First().Blocks)
                {
                    IsParagraph = block is Telerik.Windows.Documents.Flow.Model.Paragraph;
                    IsTable = block is Telerik.Windows.Documents.Flow.Model.Table;
                    if (IsParagraph)
                    {
                        blockparagraph = block as Telerik.Windows.Documents.Flow.Model.Paragraph;
                        Telerik.Windows.Documents.Flow.Model.Paragraph clonedParagraph = blockparagraph.Clone(document);
                        firstHeader.Blocks.Add(clonedParagraph);
                    }
                    else if (IsTable)
                    {
                        blocktable = block as Telerik.Windows.Documents.Flow.Model.Table;
                        Telerik.Windows.Documents.Flow.Model.Table clonedTable = blocktable.Clone(document);
                        firstHeader.Blocks.Add(clonedTable);
                    }
                }
            }

            foreach (var block in tempfooterDocument.Sections.First().Blocks)
            {
                IsParagraph = block is Telerik.Windows.Documents.Flow.Model.Paragraph;
                IsTable = block is Telerik.Windows.Documents.Flow.Model.Table;
                if (IsParagraph)
                {
                    blockparagraph = block as Telerik.Windows.Documents.Flow.Model.Paragraph;
                    Telerik.Windows.Documents.Flow.Model.Paragraph clonedParagraph = blockparagraph.Clone(document);
                    defaultFooter.Blocks.Add(clonedParagraph);
                }
                else if (IsTable)
                {
                    blocktable = block as Telerik.Windows.Documents.Flow.Model.Table;
                    Telerik.Windows.Documents.Flow.Model.Table clonedTable = blocktable.Clone(document);
                    defaultFooter.Blocks.Add(clonedTable);
                }
            }
            if (oRequest.PaperHeight == 0 && oRequest.PaperWidth == 0)
            {
                oRequest.PaperHeight = 1122;
                oRequest.PaperWidth = 794;

            }
            //MemoryStream ms = new MemoryStream(pdfProvider.Export(document));
            foreach (var item in document.Sections)
            {
                item.PageOrientation = Telerik.Windows.Documents.Model.PageOrientation.Landscape;
                if (oRequest.TxOrientation)
                {
                    item.PageSize = new System.Windows.Size(oRequest.PaperHeight, oRequest.PaperWidth);
                }
                else if (!oRequest.TxOrientation)
                {
                    item.PageSize = new System.Windows.Size(oRequest.PaperWidth, oRequest.PaperHeight);
                }
                //item.PageSize = Telerik.Windows.Documents.Model.PaperTypeConverter.ToSize(Telerik.Windows.Documents.Model.PaperTypes.A4);		
                if (oRequest.LeftMargin > 0 && oRequest.RightMargin > 0)
                    item.PageMargins = new Telerik.Windows.Documents.Primitives.Padding(oRequest.LeftMargin, 0, oRequest.RightMargin, 0);
                else if (oRequest.LeftMargin > 0 && oRequest.RightMargin == 0)
                    item.PageMargins = new Telerik.Windows.Documents.Primitives.Padding(oRequest.LeftMargin, 0, 0, 0);
                else if (oRequest.RightMargin > 0 && oRequest.LeftMargin == 0)
                    item.PageMargins = new Telerik.Windows.Documents.Primitives.Padding(0, 0, oRequest.RightMargin, 0);
                else
                    item.PageMargins = new Telerik.Windows.Documents.Primitives.Padding(0, 0, 0, 0);
                if (oRequest.TopMargin > 0)
                    item.HeaderTopMargin = oRequest.TopMargin;
                if (oRequest.BottomMargin > 0)
                    item.FooterBottomMargin = oRequest.BottomMargin;
                if (oRequest.RightMargin == 0 && oRequest.LeftMargin == 0 && oRequest.TopMargin == 0 && oRequest.BottomMargin == 0)
                {
                    item.PageMargins = new Telerik.Windows.Documents.Primitives.Padding(20, 20, 20, 20);
                }

            }
            var tables = document.EnumerateChildrenOfType<Table>();
            int width = 100;
            foreach (var table in tables)
            {
                table.PreferredWidth = new Telerik.Windows.Documents.Flow.Model.Styles.TableWidthUnit(Telerik.Windows.Documents.Flow.Model.Styles.TableWidthUnitType.Auto, width);
                if (oRequest.BinaryType == "PDF")
                    table.LayoutType = Telerik.Windows.Documents.Flow.Model.Styles.TableLayoutType.FixedWidth;
                //width -= 3;
            }
            RFD = pdfProvider.ExportToFixedDocument(document);

            //ms.Dispose();

            editor.MoveToParagraphStart(defaultFooter.Blocks.AddParagraph());
            //var codeFont = new Telerik.Windows.Documents.Spreadsheet.Model.ThemableFontFamily(new System.Windows.Media.FontFamily("MyriadPro"));
            //editor.CharacterFormatting.FontFamily.LocalValue = codeFont;
            editor.CharacterFormatting.FontSize.LocalValue = 12.0;
            var text = oRequest.TxOrientation == false ? "        \t\t \t \t \t \t \t   Page " : "        \t \t \t \t \t \t \t \t \t \t \t     Page ";
            editor.InsertText(text);
            editor.InsertField("PAGE", "1");
            editor.InsertText(" of ");
            editor.InsertField("NUMPAGES", RFD.Pages.Count.ToString());
                        							
            if (oRequest.BinaryType == "PDF")
                pdfBytes = pdfProvider.Export(document);
            else if (oRequest.BinaryType == "DOCX" || oRequest.BinaryType == "WORD")
                pdfBytes = docxProvider.Export(document);
            return pdfBytes;

        }