PDFsharp & MigraDoc Foundation

Section sec = doc.AddSection();
sec.PageSetup.TopMargin = 5;
sec.PageSetup.RightMargin = 45;
sec.PageSetup.LeftMargin = 45;

if(draftFlagNeeded){
    Image draftFlag = sec.Headers.Primary.AddImage("path-to-file.png");
    draftFlag.Left = ShapePosition.Center;
    draftFlag.Top = ShapePosition.Top;
    draftFlag.RelativeVertical = RelativeVertical.Page;
    draftFlag.RelativeHorizontal = RelativeHorizontal.Page;
    draftFlag.WrapFormat.Style = WrapStyle.Through;
}

foreach(/*set of data to make into a table*/){
    Table tbl = sec.AddTable();
    tbl.Borders.Width = 0.25;
    tbl.Borders.Left.Width = 0.5;
    tbl.Borders.Right.Width = 0.5;
    tbl.Rows.LeftIndent = 0;
    tbl.KeepTogether = false;

    /*add columns and rows to table*/

    if(/*we still have more tables to write*/){
        sec.AddPageBreak();
    }

}

            // Create the initial file in MigraDoc
            Document doc = new Document();
            new TableMaker().makeTable(doc, planCols, optionCol, companyName); //this creates the tables and adds them to doc object
            PdfDocumentRenderer rnd = new PdfDocumentRenderer(true);
            rnd.Document = doc;
            rnd.RenderDocument();
            rnd.Save(filePath);

            if (watermarkIsNeeded)
            {
                PdfDocument pdfIn = PdfReader.Open(filePath, PdfDocumentOpenMode.Import);
                PdfDocument pdfOut = new PdfDocument();
               
                for (int i = 0; i < pdfIn.PageCount; i++)
                {
                    PdfPage pg = pdfIn.Pages[i];
                    pg = pdfOut.AddPage(pg);
                    string draftFlagStr = "DRAFT";

                    // Get an XGraphics object for drawing beneath the existing content
                    XGraphics gfx = XGraphics.FromPdfPage(pg, XGraphicsPdfPageOptions.Prepend);

                    // Get the size (in point) of the text
                    XFont font = new XFont("Verdana", 72, XFontStyle.Bold);
                    XSize size = gfx.MeasureString(draftFlagStr, font);

                    // Define a rotation transformation at the center of the page
                    gfx.TranslateTransform(pg.Width / 2, pg.Height / 2);
                    gfx.RotateTransform(-Math.Atan(pg.Height / pg.Width) * 180 / Math.PI);
                    gfx.TranslateTransform(-pg.Width / 2, -pg.Height / 2);

                    // Create a string format
                    XStringFormat format = new XStringFormat();
                    format.Alignment = XStringAlignment.Near;
                    format.LineAlignment = XLineAlignment.Near;

                    // Create a dimmed red brush
                    XBrush brush = new XSolidBrush(XColor.FromArgb(128, 255, 0, 0));

                    // Draw the string
                    gfx.DrawString(draftFlagStr, font, brush,
                        new XPoint((pg.Width - size.Width) / 2, (pg.Height - size.Height) / 2),
                        format);                   
                }
                pdfOut.Save(filePath);
            }