快捷導(dǎo)航

C# 添加PDF頁眉/頁腳的示例代碼

更新時間：2018年08月31日 09:09:25 作者：Miaonly

這篇文章主要介紹了C# 添加PDF頁眉/頁腳的示例代碼，小編覺得挺不錯的，現(xiàn)在分享給大家，也給大家做個參考。一起跟隨小編過來看看吧

概述

頁眉頁腳是一篇完整、精致的文檔的重要組成部分。在頁眉頁腳處，可以呈現(xiàn)的內(nèi)容很多，如公司名稱、頁碼、工作表名、日期、圖片，如LOGO、標(biāo)記等。在下面的文章中，將介紹如何在PDF中添加頁眉頁腳。通過代碼測試，添加頁眉頁腳可以分兩種情況來實現(xiàn)效果：

1.通過添加新的一頁，在新建的頁面上來添加頁眉頁腳

2.通過給現(xiàn)有文檔直接添加頁眉頁腳

下面將根據(jù)這兩種情況介紹具體的C#代碼操作

使用工具

Free Spire.PDF for .NET 4.3（社區(qū)版）

示例代碼（供參考）

1.新建一頁來添加頁眉頁腳

1.1 添加頁眉

【C#】

using Spire.Pdf;
using Spire.Pdf.Graphics;
using System.Drawing;
using System;

namespace AddHeader_PDF
{
  class Program
  {
    static void Main(string[] args)
    {
      //新建一個PdfDocument類對象，并添加一頁
      PdfDocument pdf = new PdfDocument();
      PdfPageBase page = pdf.Pages.Add();

      //設(shè)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;

      //調(diào)用AddHeader()方法添加頁眉
      AddHeader(pdf, PdfPageSize.A4, margin);

      //保存并打開文檔
      pdf.SaveToFile("PDF頁眉.pdf");
      System.Diagnostics.Process.Start("PDF頁眉.pdf");
    }

    static void AddHeader(PdfDocument doc, SizeF pageSize, PdfMargins margin)
    {
      //初始化一個PdfPageTemplateElement對象，用于創(chuàng)建頁眉
      PdfPageTemplateElement headerSpace = new PdfPageTemplateElement(pageSize.Width, margin.Top);
      headerSpace.Foreground = true;
      doc.Template.Top = headerSpace;

      //在頁眉部分繪入文字
      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);

      //在頁眉部分繪入圖片
      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);

    }
  }
}

頁眉添加效果：

1.2添加頁腳

【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)
    {
      //新建一個PdfDocument類對象，添加一頁
      PdfDocument doc = new PdfDocument();
      PdfPageBase page = doc.Pages.Add();

      //設(shè)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;

      //調(diào)用AddFooter()方法添加頁腳
      AddFooter(doc, PdfPageSize.A4, margin);

      //調(diào)用AddPageNumber()方法添加頁碼
      AddPageNumber(doc, margin);

      //保存并打開文檔
      doc.SaveToFile("PDF頁腳.pdf");
      System.Diagnostics.Process.Start("PDF頁腳.pdf");
    }

    static void AddFooter(PdfDocument doc, SizeF pageSize, PdfMargins margin)
    {
      //初始化一個PdfPageTemplateElement對象，用于創(chuàng)建頁腳
      PdfPageTemplateElement footerSpace = new PdfPageTemplateElement(pageSize.Width, margin.Bottom);
      footerSpace.Foreground = true;
      doc.Template.Bottom = footerSpace;

      //在頁腳部分繪入文字
      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)
    {
      //添加頁碼到頁腳部分
      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);
      }

    }
  }
}

頁腳添加效果：

2.給現(xiàn)有PDF文檔添加頁眉頁腳

【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)
    {
      //加載一個測試文檔
      PdfDocument existingPdf = new PdfDocument();
      existingPdf.LoadFromFile("Test.pdf");

      //調(diào)用DrawHeader方法在現(xiàn)有文檔添加頁眉
      DrawHeader(existingPdf);

      //調(diào)用DrawFooter方法在現(xiàn)有文檔添加頁腳
      DrawFooter(existingPdf);

      //保存并打開文檔
      existingPdf.SaveToFile("output.pdf");
      System.Diagnostics.Process.Start("output.pdf");

    }
    //在頁面上方空白部位繪制頁眉
    static void DrawHeader(PdfDocument doc)
    {
      //獲取頁面大小
      SizeF pageSize = doc.Pages[0].Size;

      //聲明x,y兩個float類型變量
      float x = 90;
      float y = 20;

      for (int i = 0; i < doc.Pages.Count; i++)
      {
        //在每一頁的指定位置繪制圖片
        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);

        //在每一頁的指定位置繪制橫線
        PdfPen pen = new PdfPen(PdfBrushes.Gray, 0.5f);
        doc.Pages[i].Canvas.DrawLine(pen, x, y + height + 2, pageSize.Width - x, y + height + 2);
      }
    }

    //在頁面下方空白部位繪制頁腳
    static void DrawFooter(PdfDocument doc)
    {
      //獲取頁面大小
      SizeF pageSize = doc.Pages[0].Size;

      //聲明x,y兩個float類型變量
      float x = 90;
      float y = pageSize.Height - 72;

      for (int i = 0; i < doc.Pages.Count; i++)
      {
        //在每一頁的指定位置繪制橫線
        PdfPen pen = new PdfPen(PdfBrushes.Gray, 0.5f);
        doc.Pages[i].Canvas.DrawLine(pen, x, y, pageSize.Width - x, y);

        //在每一頁的指定位置繪制文字
        y = y + 5;
        PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("黑體", 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);         
        //在每一頁的指定位置當(dāng)前頁碼和總頁碼
        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);
      }
    }
  }
}

測試效果：