itext with Arabic windows 1256

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C#

I can not find the arabic and encoding that will work with Arabic-windows 1256 when I call itext like this :

            string tradbdo_ttf = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Fonts), "tradbdo.ttf");
    BaseFont bf1 = BaseFont.CreateFont(tradbdo_ttf, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
iTextSharp.text.Font f1 = new iTextSharp.text.Font(bf1, 10, iTextSharp.text.Font.NORMAL);


PdfPCell cell = new PdfPCell(new Paragraph(1, line, f1));