页眉页脚是一篇完整、精致的文档的重要组成部分。在页眉页脚处，可以呈现的内容很多，如公司名称、页码、工作表名、日期、图片，如LOGO、标记等。在下面的文章中，将介绍如何在PDF中添加页眉页脚。通过代码测试，添加页眉页脚可以分两种情况来实现效果：

通过添加新的一页，在新建的页面上来添加页眉页脚
通过给现有文档直接添加页眉页脚
下面将根据这两种情况介绍具体的C#代码操作
（示例供参考）
使用工具：Free Spire.PDF for .NET 4.3（社区版）
1.新建一页来添加页眉页脚

1.1 添加页眉

【C#】

using Spire.Pdf; using Spire.Pdf.Graphics; using System.Drawing; using System;  namespace AddHeader_PDF {     class Program     {         static void Main(string[] args)         {             //新建一个PdfDocument类对象，并添加一页             PdfDocument pdf = new PdfDocument();             PdfPageBase page = pdf.Pages.Add();              //设置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;              //调用AddHeader()方法添加页眉             AddHeader(pdf, PdfPageSize.A4, margin);              //保存并打开文档             pdf.SaveToFile("PDF页眉.pdf");             System.Diagnostics.Process.Start("PDF页眉.pdf");         }          static void AddHeader(PdfDocument doc, SizeF pageSize, PdfMargins margin)         {             //初始化一个PdfPageTemplateElement对象，用于创建页眉             PdfPageTemplateElement headerSpace = new PdfPageTemplateElement(pageSize.Width, margin.Top);             headerSpace.Foreground = true;             doc.Template.Top = headerSpace;              //在页眉部分绘入文字             PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("Arial Unicode MS", 10f), true);             PdfStringFormat format = new PdfStringFormat(PdfTextAlignment.Right);             String headerText = "WORLD TRADE ORGANIZATION, WTO \n THE INTERNATIONAL ORGANIZATION THAT REGULATES INTERNATIONAL TRADE";             float x = PdfPageSize.A4.Width;             float y = 0;             headerSpace.Graphics.DrawString(headerText, font, PdfBrushes.Black, x, y, format);              //在页眉部分绘入图片             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);          }     } }

页眉添加效果：

1.2添加页脚

【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)         {             //新建一个PdfDocument类对象，添加一页             PdfDocument doc = new PdfDocument();             PdfPageBase page = doc.Pages.Add();              //设置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;              //调用AddFooter()方法添加页脚             AddFooter(doc, PdfPageSize.A4, margin);              //调用AddPageNumber()方法添加页码             AddPageNumber(doc, margin);              //保存并打开文档             doc.SaveToFile("PDF页脚.pdf");             System.Diagnostics.Process.Start("PDF页脚.pdf");         }          static void AddFooter(PdfDocument doc, SizeF pageSize, PdfMargins margin)         {             //初始化一个PdfPageTemplateElement对象，用于创建页脚             PdfPageTemplateElement footerSpace = new PdfPageTemplateElement(pageSize.Width, margin.Bottom);             footerSpace.Foreground = true;             doc.Template.Bottom = footerSpace;              //在页脚部分绘入文字             PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("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)         {             //添加页码到页脚部分             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);             }          }     } }

页脚添加效果：

2.给现有PDF文档添加页眉页脚

【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)         {             //加载一个测试文档             PdfDocument existingPdf = new PdfDocument();             existingPdf.LoadFromFile("Test.pdf");              //调用DrawHeader方法在现有文档添加页眉             DrawHeader(existingPdf);              //调用DrawFooter方法在现有文档添加页脚             DrawFooter(existingPdf);              //保存并打开文档             existingPdf.SaveToFile("output.pdf");             System.Diagnostics.Process.Start("output.pdf");          }         //在页面上方空白部位绘制页眉         static void DrawHeader(PdfDocument doc)         {             //获取页面大小             SizeF pageSize = doc.Pages[0].Size;              //声明x,y两个float型变量             float x = 90;             float y = 20;              for (int i = 0; i < doc.Pages.Count; i++)             {                 //在每一页的指定位置绘制图片                 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);                  //在每一页的指定位置绘制横线                 PdfPen pen = new PdfPen(PdfBrushes.Gray, 0.5f);                 doc.Pages[i].Canvas.DrawLine(pen, x, y + height + 2, pageSize.Width - x, y + height + 2);             }         }          //在页面下方空白部位绘制页脚         static void DrawFooter(PdfDocument doc)         {             //获取页面大小             SizeF pageSize = doc.Pages[0].Size;              //声明x,y两个float型变量             float x = 90;             float y = pageSize.Height - 72;              for (int i = 0; i < doc.Pages.Count; i++)             {                 //在每一页的指定位置绘制横线                 PdfPen pen = new PdfPen(PdfBrushes.Gray, 0.5f);                 doc.Pages[i].Canvas.DrawLine(pen, x, y, pageSize.Width - x, y);                  //在每一页的指定位置绘制文字                 y = y + 5;                 PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("黑体", 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);                                  //在每一页的指定位置当前页码和总页码                 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);             }         }     } }