使用 C# 中的 iTextSharp 和 IronPDF 在 PDF 中添加页眉和页脚（附示例

using IronPdf;
using System;

var renderer = new ChromePdfRenderer();

// Create an HTML header with logo and styling
renderer.RenderingOptions.HtmlHeader = new HtmlHeaderFooter
{
    HtmlFragment = @"
        <div style='width: 100%; font-family: Arial, sans-serif;'>
            <img src='logo.png' style='height: 30px; float: left;' />
            <span style='float: right; font-size: 12px; color: #666;'>
                Confidential Document
            </span>
        </div>",
    MaxHeight = 25,
    DrawDividerLine = true,
    BaseUrl = new Uri(@"C:\assets\").AbsoluteUri
};

// Create an HTML footer with page numbering
renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter
{
    HtmlFragment = @"
        <div style='text-align: center; font-size: 10px; color: #999;'>
            <span>Generated on {date} at {time}</span>
            <br/>
            <span>Page {page} of {total-pages}</span>
        </div>",
    MaxHeight = 20
};

renderer.RenderingOptions.MarginTop = 30;
renderer.RenderingOptions.MarginBottom = 25;

var pdf = renderer.RenderHtmlAsPdf("<h1>Project Proposal</h1><p>Document content...</p>");
pdf.SaveAs("styled-document.pdf");

Imports IronPdf
Imports System

Dim renderer As New ChromePdfRenderer()

' Create an HTML header with logo and styling
renderer.RenderingOptions.HtmlHeader = New HtmlHeaderFooter With {
    .HtmlFragment = "
        <div style='width: 100%; font-family: Arial, sans-serif;'>
            <img src='logo.png' style='height: 30px; float: left;' />
            <span style='float: right; font-size: 12px; color: #666;'>
                Confidential Document
            </span>
        </div>",
    .MaxHeight = 25,
    .DrawDividerLine = True,
    .BaseUrl = New Uri("C:\assets\").AbsoluteUri
}

' Create an HTML footer with page numbering
renderer.RenderingOptions.HtmlFooter = New HtmlHeaderFooter With {
    .HtmlFragment = "
        <div style='text-align: center; font-size: 10px; color: #999;'>
            <span>Generated on {date} at {time}</span>
            <br/>
            <span>Page {page} of {total-pages}</span>
        </div>",
    .MaxHeight = 20
}

renderer.RenderingOptions.MarginTop = 30
renderer.RenderingOptions.MarginBottom = 25

Dim pdf = renderer.RenderHtmlAsPdf("<h1>Project Proposal</h1><p>Document content...</p>")
pdf.SaveAs("styled-document.pdf")

using IronPdf;

// Load an existing PDF document
var pdf = PdfDocument.FromFile("customer-profile.pdf");

// Define the header to add
var header = new HtmlHeaderFooter
{
    HtmlFragment = "<div style='text-align: center;'>REVISED COPY - {date}</div>",
    MaxHeight = 20
};

// Define the footer to add
var footer = new HtmlHeaderFooter
{
    HtmlFragment = "<div style='text-align: right;'>Page {page}</div>",
    MaxHeight = 15
};

// Apply headers and footers to all pages
pdf.AddHtmlHeaders(header);
pdf.AddHtmlFooters(footer);
pdf.SaveAs("document-with-new-headers.pdf");

Imports IronPdf

' Load an existing PDF document
Dim pdf = PdfDocument.FromFile("customer-profile.pdf")

' Define the header to add
Dim header As New HtmlHeaderFooter With {
    .HtmlFragment = "<div style='text-align: center;'>REVISED COPY - {date}</div>",
    .MaxHeight = 20
}

' Define the footer to add
Dim footer As New HtmlHeaderFooter With {
    .HtmlFragment = "<div style='text-align: right;'>Page {page}</div>",
    .MaxHeight = 15
}

' Apply headers and footers to all pages
pdf.AddHtmlHeaders(header)
pdf.AddHtmlFooters(footer)
pdf.SaveAs("document-with-new-headers.pdf")

using IronPdf;

string userName = GetCurrentUserName();
string documentVersion = "v2.3.1";

var renderer = new ChromePdfRenderer();

renderer.RenderingOptions.HtmlHeader = new HtmlHeaderFooter
{
    HtmlFragment = $"<div style='font-size:10px;'>Prepared by: {userName} " +
                   $"| Version: {documentVersion} " +
                   "| Page {page} of {total-pages}</div>",
    MaxHeight = 20
};

var pdf = renderer.RenderHtmlAsPdf("<h1>Annual Report</h1><p>Body content here.</p>");
pdf.SaveAs("dynamic-header-report.pdf");

Imports IronPdf

Dim userName As String = GetCurrentUserName()
Dim documentVersion As String = "v2.3.1"

Dim renderer As New ChromePdfRenderer()

renderer.RenderingOptions.HtmlHeader = New HtmlHeaderFooter With {
    .HtmlFragment = $"<div style='font-size:10px;'>Prepared by: {userName} " &
                    $"| Version: {documentVersion} " &
                    "| Page {page} of {total-pages}</div>",
    .MaxHeight = 20
}

Dim pdf = renderer.RenderHtmlAsPdf("<h1>Annual Report</h1><p>Body content here.</p>")
pdf.SaveAs("dynamic-header-report.pdf")

using iText.Kernel.Pdf;
using iText.Layout;
using iText.Layout.Element;
using iText.Kernel.Events;
using iText.Kernel.Geom;
using iText.Layout.Properties;

// Event handler class for headers and footers -- similar to PdfPageEventHelper
public class ITextEvents : IEventHandler
{
    private string _header;
    public string Header
    {
        get { return _header; }
        set { _header = value; }
    }

    public void HandleEvent(Event currentEvent)
    {
        PdfDocumentEvent docEvent = (PdfDocumentEvent)currentEvent;
        PdfDocument pdfDoc = docEvent.GetDocument();
        PdfPage page = docEvent.GetPage();
        Rectangle pageSize = page.GetPageSize();

        // Create a new PdfCanvas for the contentbyte object
        PdfCanvas pdfCanvas = new PdfCanvas(
            page.NewContentStreamBefore(),
            page.GetResources(),
            pdfDoc);
        Canvas canvas = new Canvas(pdfCanvas, pageSize);

        // Add header text at calculated position
        canvas.ShowTextAligned(
            new Paragraph("Quarterly Sales Report"),
            pageSize.GetWidth() / 2,
            pageSize.GetTop() - 20,
            TextAlignment.CENTER);

        // Add footer with page number
        int pageNumber = pdfDoc.GetPageNumber(page);
        canvas.ShowTextAligned(
            new Paragraph($"Page {pageNumber}"),
            pageSize.GetWidth() / 2,
            pageSize.GetBottom() + 20,
            TextAlignment.CENTER);

        canvas.Close();
    }
}

// Usage in main code
var writer = new PdfWriter("report.pdf");
var pdfDoc = new PdfDocument(writer);
var document = new Document(pdfDoc);

// Register the event handler for END_PAGE
pdfDoc.AddEventHandler(PdfDocumentEvent.END_PAGE, new ITextEvents());

document.Add(new Paragraph("Sales Data"));
document.Add(new Paragraph("Content goes here..."));
document.Close();

Imports iText.Kernel.Pdf
Imports iText.Layout
Imports iText.Layout.Element
Imports iText.Kernel.Events
Imports iText.Kernel.Geom
Imports iText.Layout.Properties

' Event handler class for headers and footers -- similar to PdfPageEventHelper
Public Class ITextEvents
    Implements IEventHandler

    Private _header As String
    Public Property Header As String
        Get
            Return _header
        End Get
        Set(value As String)
            _header = value
        End Set
    End Property

    Public Sub HandleEvent(currentEvent As [Event]) Implements IEventHandler.HandleEvent
        Dim docEvent As PdfDocumentEvent = CType(currentEvent, PdfDocumentEvent)
        Dim pdfDoc As PdfDocument = docEvent.GetDocument()
        Dim page As PdfPage = docEvent.GetPage()
        Dim pageSize As Rectangle = page.GetPageSize()

        ' Create a new PdfCanvas for the contentbyte object
        Dim pdfCanvas As New PdfCanvas(page.NewContentStreamBefore(), page.GetResources(), pdfDoc)
        Dim canvas As New Canvas(pdfCanvas, pageSize)

        ' Add header text at calculated position
        canvas.ShowTextAligned(New Paragraph("Quarterly Sales Report"), pageSize.GetWidth() / 2, pageSize.GetTop() - 20, TextAlignment.CENTER)

        ' Add footer with page number
        Dim pageNumber As Integer = pdfDoc.GetPageNumber(page)
        canvas.ShowTextAligned(New Paragraph($"Page {pageNumber}"), pageSize.GetWidth() / 2, pageSize.GetBottom() + 20, TextAlignment.CENTER)

        canvas.Close()
    End Sub
End Class

' Usage in main code
Dim writer As New PdfWriter("report.pdf")
Dim pdfDoc As New PdfDocument(writer)
Dim document As New Document(pdfDoc)

' Register the event handler for END_PAGE
pdfDoc.AddEventHandler(PdfDocumentEvent.END_PAGE, New ITextEvents())

document.Add(New Paragraph("Sales Data"))
document.Add(New Paragraph("Content goes here..."))
document.Close()

using IronPdf;
using IronSoftware.Drawing;

var renderer = new ChromePdfRenderer();

var footer = new TextHeaderFooter
{
    LeftText = "Confidential",
    CenterText = "{pdf-title}",
    RightText = "Page {page} of {total-pages}",
    Font = FontTypes.Arial,
    FontSize = 9,
    DrawDividerLine = true,
    DrawDividerLineColor = Color.Gray
};

renderer.RenderingOptions.TextFooter = footer;
renderer.RenderingOptions.MarginBottom = 20;

var pdf = renderer.RenderHtmlAsPdf("<h1>Board Report</h1><p>Executive summary content.</p>");
pdf.SaveAs("board-report.pdf");

Imports IronPdf
Imports IronSoftware.Drawing

Dim renderer As New ChromePdfRenderer()

Dim footer As New TextHeaderFooter With {
    .LeftText = "Confidential",
    .CenterText = "{pdf-title}",
    .RightText = "Page {page} of {total-pages}",
    .Font = FontTypes.Arial,
    .FontSize = 9,
    .DrawDividerLine = True,
    .DrawDividerLineColor = Color.Gray
}

renderer.RenderingOptions.TextFooter = footer
renderer.RenderingOptions.MarginBottom = 20

Dim pdf = renderer.RenderHtmlAsPdf("<h1>Board Report</h1><p>Executive summary content.</p>")
pdf.SaveAs("board-report.pdf")