private static void drawUncoloredPattern(PdfDocument pdf) { PdfTilingPattern pattern = pdf.AddUncoloredPattern(5, 5, new PdfRgbColorSpace()); fill(pattern); PdfCanvas canvas = pdf.GetPage(0).Canvas; canvas.Brush.Pattern = pattern; canvas.Brush.Color = new PdfRgbColor(0, 255, 0); canvas.DrawString(new PointF(50, 150), "Uncolored Pattern colored green"); }