EVO HTML to PDF Converter

Add Text Elements to a PDF Document

EVO PDF Client for .NET Documentation

EVO HTML to PDF Converter allows you to add text with various fonts to a PDF document. A text element is represented in API by a EvoPdf.HtmlToPdfClientTextElement object.

You can add text elements using the fonts installed in system, fonts from local file system and standard PDF fonts. You can also add vertical text and text stamps to PDF, render the text in a given box or flow the text on multiple pages.

Code Sample - Add Text Elements to a PDF Document

C#
protected void createPdfButton_Click(object sender, EventArgs e)
        {
            // Get the server IP and port
            String serverIP = textBoxServerIP.Text;
            uint serverPort = uint.Parse(textBoxServerPort.Text);

            // Create a PDF document
            Document pdfDocument = null;
            if (radioButtonUseTcpService.Checked)
                pdfDocument = new Document(serverIP, serverPort);
            else
                pdfDocument = new Document(true, textBoxWebServiceUrl.Text);

            // Set optional service password
            if (textBoxServicePassword.Text.Length > 0)
                pdfDocument.ServicePassword = textBoxServicePassword.Text;

            // Set license key received after purchase to use the converter in licensed mode
            // Leave it not set to use the converter in demo mode
            pdfDocument.LicenseKey = "4W9+bn19bn5ue2B+bn1/YH98YHd3d3c=";

            // The titles font used to mark various sections of the PDF document
            PdfFont titleFont = new PdfFont("Times New Roman", 10, true);
            titleFont.Bold = true;
            titleFont.Underline = true;

            // Create a PDF page in PDF document
            PdfPage pdfPage = pdfDocument.AddPage();

            // Text Elements Using Fonts Installed in System

            // Add section title
            TextElement titleTextElement = new TextElement(5, 5, "Text Elements Using Fonts Installed in System", titleFont);
            titleTextElement.ForeColor = RgbColor.DarkGreen;
            pdfPage.AddElement(titleTextElement);

            // Embed in PDF document a font with Normal style installed in system
            PdfFont embeddedSystemFontNormal = new PdfFont("Times New Roman", 10, true);

            // Add a text element using a font with Normal style installed in system
            TextElement embeddedSystemFontNormalTextElement = new TextElement(0, 0, "This text uses a font with Normal style installed in system", embeddedSystemFontNormal);
            pdfDocument.AddElement(embeddedSystemFontNormalTextElement, 5, 10);

            // Embed in PDF document a font with Bold style installed in system
            PdfFont embeddedSystemFontBold = new PdfFont("Times New Roman", 10, true);
            embeddedSystemFontBold.Bold = true;

            // Add a text element using a font with Bold style installed in system
            TextElement embeddedSystemFontBoldTextElement = new TextElement(0, 0, "This text uses a font with Bold style installed in system", embeddedSystemFontBold);
            pdfDocument.AddElement(embeddedSystemFontBoldTextElement, 3);

            // Embed in PDF document a font with Italic style installed in system
            PdfFont embeddedSystemFontItalic = new PdfFont("Times New Roman", 10, true);
            embeddedSystemFontItalic.Italic = true;

            // Add a text element using a font with Italic style installed in system
            TextElement embeddedSystemFontItalicTextElement = new TextElement(0, 0, "This text uses a font with Italic style installed in system", embeddedSystemFontItalic);
            pdfDocument.AddElement(embeddedSystemFontItalicTextElement, 3);

            // Text Elements Using Fonts From Local Files

            // Add section title
            titleTextElement = new TextElement(0, 0, "Text Elements Using Fonts From Local Files", titleFont);
            titleTextElement.ForeColor = RgbColor.Navy;
            pdfDocument.AddElement(titleTextElement, -5, 15);

            // Embed a True Type font from a local file in PDF document
            PdfFont localTrueTypeFont = new PdfFont(Server.MapPath("~/DemoAppFiles/Input/Fonts/TrueType.ttf"), 10);

            // Add a text element using the local True Type font to PDF document
            TextElement localFontTtfTextElement = new TextElement(0, 0, "This text uses a True Type Font loaded from a local file", localTrueTypeFont);
            pdfDocument.AddElement(localFontTtfTextElement, 5, 10);

            // Embed an OpenType font with TrueType Outlines in PDF document
            PdfFont localOpenTypeTrueTypeFont = new PdfFont(Server.MapPath("~/DemoAppFiles/Input/Fonts/OpenTypeTrueType.otf"), 10);

            // Add a text element using the local OpenType font with TrueType Outlines to PDF document
            TextElement localOpenTypeTrueTypeFontTextElement = new TextElement(0, 0, "This text uses an Open Type Font with TrueType Outlines loaded from a local file", localOpenTypeTrueTypeFont);
            pdfDocument.AddElement(localOpenTypeTrueTypeFontTextElement);

            //  Embed an OpenType font with PostScript Outlines in PDF document
            PdfFont localOpenTypePostScriptFont = new PdfFont(Server.MapPath("~/DemoAppFiles/Input/Fonts/OpenTypePostScript.otf"), 10);

            // Add a text element using the local OpenType font with PostScript Outlines to PDF document
            TextElement localOpenTypePostScriptFontTextElement = new TextElement(0, 0, "This text uses an Open Type Font with PostScript Outlines loaded from a local file", localOpenTypePostScriptFont);
            pdfDocument.AddElement(localOpenTypePostScriptFontTextElement, 3);

            // Text Elements Using Standard PDF Fonts

            // Add section title
            titleTextElement = new TextElement(0, 0, "Text Elements Using Standard PDF Fonts", titleFont);
            titleTextElement.ForeColor = RgbColor.DarkGreen;
            pdfDocument.AddElement(titleTextElement, -5, 10);

            // Create a standard PDF font with Normal style
            PdfFont standardPdfFontNormal = new PdfFont(StdFontBaseFamily.Helvetica, 10);

            // Add a text element using the standard PDF font with Normal style
            TextElement standardPdfFontNormalTextElement = new TextElement(0, 0, "This text uses a standard PDF font with Normal style", standardPdfFontNormal);
            pdfDocument.AddElement(standardPdfFontNormalTextElement, 5, 10);

            // Create a standard PDF font with Bold style
            PdfFont standardPdfFontBold = new PdfFont(StdFontBaseFamily.HelveticaBold, 10);

            // Add a text element using the standard PDF font with Bold style
            TextElement standardPdfFontBoldTextElement = new TextElement(0, 0, "This text uses a standard PDF font with Bold style", standardPdfFontBold);
            pdfDocument.AddElement(standardPdfFontBoldTextElement, 3);

            // Create a standard PDF font with Italic style
            PdfFont standardPdfFontItalic = new PdfFont(StdFontBaseFamily.HelveticaOblique, 10);

            // Add a text element using the standard PDF font with Italic style
            TextElement standardPdfFontItalicTextElement = new TextElement(0, 0, "This text uses a standard PDF font with Italic style", standardPdfFontItalic);
            pdfDocument.AddElement(standardPdfFontItalicTextElement, 3);

            // Add a text element that flows freely in width and height

            string text = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/Text_Files/Text_File.txt"));

            // Add section title
            titleTextElement = new TextElement(0, 0, "Text Element that flows freely in width and height", titleFont);
            titleTextElement.ForeColor = RgbColor.DarkGreen;
            pdfDocument.AddElement(titleTextElement, -5, 10);

            // Add the text element
            TextElement freeWidthAndHeightTextElement = new TextElement(0, 0, text, embeddedSystemFontNormal);
            pdfDocument.AddElement(freeWidthAndHeightTextElement, 5, 10);

            // Add a text element with a given width that flows freely in height

            // Add section title
            titleTextElement = new TextElement(0, 0, "Text Element with a given width that flows freely in height", titleFont);
            titleTextElement.ForeColor = RgbColor.Navy;
            pdfDocument.AddElement(titleTextElement, -5, 10);

            // Add the text element
            TextElement freeHeightTextElement = new TextElement(0, 0, 400, text, embeddedSystemFontNormal);
            pdfDocument.AddElement(freeHeightTextElement, 5, 10);

            // Add a text element with a given width and height

            // Add section title
            titleTextElement = new TextElement(0, 0, "Text Element with a given width and height", titleFont);
            titleTextElement.ForeColor = RgbColor.DarkGreen;
            pdfDocument.AddElement(titleTextElement, -5, 10);

            // Add the text element
            TextElement boundedTextElement = new TextElement(0, 0, 400, 50, text, embeddedSystemFontNormal);
            pdfDocument.AddElement(boundedTextElement, 5, 10);

            // Add a text element that flows freely on next PDF page

            // Add section title
            titleTextElement = new TextElement(0, 0, "Text Element that flows freely on multiple PDF pages", titleFont);
            titleTextElement.ForeColor = RgbColor.Navy;
            pdfDocument.AddElement(titleTextElement, -5, 10);

            // Add the text element
            string multiPageText = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/Text_Files/Large_Text_File.txt"));
            TextElement multiPageTextElement = new TextElement(0, 0, 575, multiPageText, embeddedSystemFontNormal);
            multiPageTextElement.BackColor = RgbColor.WhiteSmoke;
            pdfDocument.AddElement(multiPageTextElement, 5, 10);

            // Add a line at the bottom of the multipage text element

            LineElement bottomLine = new LineElement(0, 0, 100, 0);
            pdfDocument.AddElement(bottomLine, 0, 1);

            pdfPage = pdfDocument.AddPage();

            // Text Elements with Vertical Text

            // Add section title
            titleTextElement = new TextElement(0, 0, "Vertical Text", titleFont);
            titleTextElement.ForeColor = RgbColor.Navy;
            pdfPage.AddElement(titleTextElement);

            // Add a top to bottom vertical text
            string topBottomText = "This is a Top to Bottom Vertical Text";

            TextElement topBottomVerticalTextElement = new TextElement(0, 0, topBottomText, embeddedSystemFontNormal);
            topBottomVerticalTextElement.Translate(25, 50);
            topBottomVerticalTextElement.Rotate(90);
            pdfDocument.AddElement(topBottomVerticalTextElement);

            pdfPage = pdfDocument.AddPage();

            // Add a bottom to top vertical text
            string bottomTopText = "This is a Bottom to Top Vertical Text";
            float bottomTopTextWidth = 200;

            TextElement bottomTopVerticalTextElement = new TextElement(0, 0, bottomTopText, embeddedSystemFontNormal);
            bottomTopVerticalTextElement.Translate(0, bottomTopTextWidth);
            bottomTopVerticalTextElement.Rotate(-90);
            pdfPage.AddElement(bottomTopVerticalTextElement);

            // Add a text stamp to a PDF document

            // Create a PDF font
            PdfFont stampPdfFont = new PdfFont("Times New Roman", 24, true);
            // The stamp text
            string stampText = String.Format("Text Stamp {0}", DateTime.Now.ToString("d"));
            // Measure the text 
            float textWidth = 100;
            PdfPage page = pdfDocument.AddPage();
            // Get the PDF page drawable area width and height
            float pdfPageWidth = page.PageSize.Width;
            float pdfPageHeight = page.PageSize.Height;

            // Calculate the PDF page diagonal
            float pdfPageDiagonal = (float)Math.Sqrt(pdfPageWidth * pdfPageWidth + pdfPageHeight * pdfPageHeight);

            // The text location on PDF page diagonal
            float xStampLocation = (pdfPageDiagonal - textWidth) / 2;

            // Create the stamp as a rotated text element
            TextElement stampTextElement = new TextElement(xStampLocation, 0, stampText, stampPdfFont);
            stampTextElement.ForeColor = RgbColor.Coral;
            stampTextElement.Rotate((float)(Math.Atan(pdfPageHeight / pdfPageWidth) * (180 / Math.PI)));
            stampTextElement.Opacity = 75;

            // Add the stamp to PDF page
            page.AddElement(stampTextElement);

            // Save the PDF document in a memory buffer
            byte[] outPdfBuffer = pdfDocument.Save();
        }