private static void SetSlideFooter(PPT.Slide slide, int slideNumber) { // Insert the textboxes var textShape1 = PptShapeManager.AddTextBoxToSlide( slide, MsoTextOrientation.msoTextOrientationHorizontal, 905f, 512f, 100f, 40f); // Set the text in the textboxes PptShapeManager.SetTextBoxText(textShape1, "slide " + slideNumber); textShape1.TextEffect.FontBold = MsoTriState.msoFalse; textShape1.TextEffect.FontSize = 14f; }