How C # Adds a PDF header footer

The header footer is an important part of a complete, refined document. In the header and footer, you can render a lot of content, such as company name, page number, worksheet name, date, picture, such as logo, tag, etc. In the following article, you'll learn how to add a header footer to a PDF. With code testing, adding a header footer can be done in two ways:

• Add a header footer to a new page by adding a new page
• Add header footer directly to an existing document
  The following describes specific C # code actions based on both of these scenarios
  (Example for reference)
  Using tools: Free spire.pdf for. NET 4.3 (Community Edition) 1. Create a new page to add Header Footer 1.1 Add header

  "C #"

Using spire.pdf;using spire.pdf.graphics;using system.drawing;using system;namespace AddHeader_PDF{class Program { static void Main (string[] args) {//Create a new Pdfdocument class object and add a page pdfdocument PDF = new PDF            Document (); Pdfpagebase page = PDF.            Pages.Add ();            Set margin Pdfunitconvertor UNITCVTR = new Pdfunitconvertor ();            Pdfmargins margin = new Pdfmargins (); Margin.            Top = Unitcvtr.convertunits (2.54f, Pdfgraphicsunit.centimeter, Pdfgraphicsunit.point); Margin. Bottom = margin.            Top; Margin.            left = Unitcvtr.convertunits (4.17f, Pdfgraphicsunit.centimeter, Pdfgraphicsunit.point); Margin. right = margin.            Left;            Call the AddHeader () method to add the header AddHeader (PDF, pdfpagesize.a4, margin); Save and open the document PDF.            SaveToFile ("PDF header. pdf");        System.Diagnostics.Process.Start ("PDF header. pdf"); } static void AddHeader (Pdfdocument doc, SizeF pageSize,Pdfmargins margin) {//Initialize a Pdfpagetemplateelement object for creating the header pdfpagetemplateelement Headerspac E = new Pdfpagetemplateelement (pagesize.width, margin.            TOP);            Headerspace.foreground = true; Doc.            Template.top = Headerspace;            Draws text in the header section Pdftruetypefont font = new Pdftruetypefont ("Arial Unicode MS", 10f), true);            Pdfstringformat format = new Pdfstringformat (pdftextalignment.right);            String HeaderText = "World trade ORGANIZATION, WTO \ International ORGANIZATION, regulates international trade";            float x = PdfPageSize.A4.Width;            Float y = 0;            HeaderSpace.Graphics.DrawString (HeaderText, Font, Pdfbrushes.black, x, y, format);            In the header section, draw the picture pdfimage Headerimage = Pdfimage.fromfile (@ "C:\Users\Administrator\Desktop\1.png");            float width = HEADERIMAGE.WIDTH/2;            float height = HEADERIMAGE.HEIGHT/3; headerspace.gRaphics.        DrawImage (headerimage, 0, 0, width, height); }    }}

Header Add Effect:

1.2 Adding a footer

"C #"

Using spire.pdf;using spire.pdf.graphics;using system.drawing;using system;using Spire.Pdf.AutomaticFields; Namespace addfooter_pdf{class Program {static void Main (string[] args) {//Create a new Pdfdocumen            Class T object, add a page pdfdocument doc = new pdfdocument (); Pdfpagebase page = doc.            Pages.Add ();            Set margin Pdfunitconvertor UNITCVTR = new Pdfunitconvertor ();            Pdfmargins margin = new Pdfmargins (); Margin.            Top = Unitcvtr.convertunits (2.54f, Pdfgraphicsunit.centimeter, Pdfgraphicsunit.point); Margin. Bottom = margin.            Top; Margin.            left = Unitcvtr.convertunits (4.17f, Pdfgraphicsunit.centimeter, Pdfgraphicsunit.point); Margin. right = margin.            Left;            Call the Addfooter () method to add a footer Addfooter (doc, pdfpagesize.a4, margin);            Call the Addpagenumber () method to add the page number Addpagenumber (doc, margin); Save and open document Doc.            SaveToFile ("PDF footer. pdf"); System.diagNostics.        Process.Start ("PDF footer. pdf"); } static void Addfooter (Pdfdocument doc, SizeF pageSize, pdfmargins margin) {//Initialize a Pdfpagetempl The Ateelement object that is used to create the footer pdfpagetemplateelement footerspace = new Pdfpagetemplateelement (pagesize.width, margin.            Bottom);            Footerspace.foreground = true; Doc.            Template.bottom = Footerspace;            Draws text in the footer section Pdftruetypefont font = new Pdftruetypefont ("Arial Unicode MS", 10f), true);            Pdfstringformat format = new Pdfstringformat (pdftextalignment.center);            String headerText = "Website:www.wto.org";            float x = PDFPAGESIZE.A4.WIDTH/2;            Float y = 0;        FooterSpace.Graphics.DrawString (HeaderText, Font, Pdfbrushes.black, x, y, format); } static void Addpagenumber (Pdfdocument doc, pdfmargins margin) {//Add page number to footer section foreach (Pdfpagebase page in Doc.) Pages) {pdfstringFormat format1 = new Pdfstringformat (pdftextalignment.left); int x1 = Convert.ToInt32 (page.                CANVAS.CLIENTSIZE.WIDTH/2); int y1 = Convert.ToInt32 (page. Canvas.clientsize.height-margin.                Bottom + 20);                Rectangle bounds = new Rectangle (x1, Y1, 20, 20);                Pdfpagenumberfield field = new Pdfpagenumberfield ();                Pdftruetypefont font = new Pdftruetypefont (New Font ("Arial Unicode MS", 10f), true); Field.                Font = font; Field.                StringFormat = FORMAT1; Field.                Brush = Pdfbrushes.black; Field.                Bounds = Bounds; Field. Draw (page.            Canvas); }        }    }}

Footer Add Effect:

2. Add a header footer to an existing PDF document

"C #"

Using spire.pdf;using spire.pdf.automaticfields;using spire.pdf.graphics;using system;using System.Drawing;            Namespace pdfheader{class Program {static void Main (string[] args) {//Load a test document            Pdfdocument existingpdf = new Pdfdocument ();            Existingpdf.loadfromfile ("Test.pdf");            Call the Drawheader method to add a header Drawheader (existingpdf) to an existing document;            Call the Drawfooter method to add a footer Drawfooter (existingpdf) to an existing document;            Save and open the document Existingpdf.savetofile ("Output.pdf");        System.Diagnostics.Process.Start ("Output.pdf"); }//Draw header static void Drawheader (Pdfdocument doc) {//Get page Size SizeF page in blank area above Size = doc. Pages[0].            Size;            Declares X, y two float-type variable float x = 90;            Float y = 20; for (int i = 0; i < Doc. Pages.count; i++) {//Draw a picture at the specified location on each page pdfimage headerimage = pdfimage.fromfile ("Logo.png");                float width = HEADERIMAGE.WIDTH/7;                float height = HEADERIMAGE.HEIGHT/7; Doc. Pages[i].                Canvas.drawimage (Headerimage, x, y, width, height);                Draw a horizontal line at the specified position on each page PDFpen pen = new PDFpen (Pdfbrushes.gray, 0.5f); Doc. Pages[i].            Canvas.drawline (pen, x, y + height + 2, pagesize.width-x, y + height + 2); }}//Draw footer in blank area below page static void Drawfooter (Pdfdocument doc) {//Get page size S Izef pageSize = doc. Pages[0].            Size;            Declares X, y two float-type variable float x = 90;            Float y = pagesize.height-72; for (int i = 0; i < Doc. Pages.count;                i++) {//Draw horizontal PDFpen pen = new PDFpen (Pdfbrushes.gray, 0.5f) at the specified position on each page; Doc. Pages[i].                Canvas.drawline (pen, x, Y, pagesize.width-x, y);                Draws the text at the specified position on each page y = y + 5; Pdftruetypefont font = new PdftruEtypefont (New Font ("Blackbody", 10f, FontStyle.Bold), true);                Pdfstringformat format = new Pdfstringformat (pdftextalignment.left);                String footertext = "website\n https://g20.org/"; Doc. Pages[i].                                 Canvas.drawstring (Footertext, Font, Pdfbrushes.black, x, y, format);                At the specified position on each page, the current page number and the total page pdfpagenumberfield number = new Pdfpagenumberfield ();                Pdfpagecountfield count = new Pdfpagecountfield ();                Pdfcompositefield Compositefield = new Pdfcompositefield (font, Pdfbrushes.black, "{0}/{1}", number, count);                Compositefield.stringformat = new Pdfstringformat (pdftextalignment.right, pdfverticalalignment.top); SizeF size = font.                MeasureString (Compositefield.text); Compositefield.bounds = new RectangleF (pagesize.width-x-size. Width, y, size. Width, size.                Height); Compositefield.draw (Doc. Pages[i].            Canvas); }        }    }}

Test results:

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How C # Adds a PDF header footer