C# 添加PDF页眉/页脚的示例代码

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类型变量
      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类型变量
      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 = " Websiten https://www.easck.com//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);
      }
    }
  }
}								 
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