如何在C#中使用IronPDF新增PDF書籤和大綱

using IronPdf;

// Create a new PDF or edit an existing document.
PdfDocument pdf = PdfDocument.FromFile("existing.pdf");

// Add a bookmark
pdf.Bookmarks.AddBookMarkAtEnd("NameOfBookmark", 0);

// Add a sub-bookmark
pdf.Bookmarks.AddBookMarkAtEnd("NameOfSubBookmark", 1);

pdf.SaveAs("singleLayerBookmarks.pdf");

Imports IronPdf

' Create a new PDF or edit an existing document.
Private pdf As PdfDocument = PdfDocument.FromFile("existing.pdf")

' Add a bookmark
pdf.Bookmarks.AddBookMarkAtEnd("NameOfBookmark", 0)

' Add a sub-bookmark
pdf.Bookmarks.AddBookMarkAtEnd("NameOfSubBookmark", 1)

pdf.SaveAs("singleLayerBookmarks.pdf")

using IronPdf;

// Load existing PDF document
PdfDocument pdf = PdfDocument.FromFile("examinationPaper.pdf");

// Assign IPdfBookMark object to a variable
var mainBookmark = pdf.Bookmarks.AddBookMarkAtEnd("Examination", 0);

// Add bookmark for days
var date1Bookmark = mainBookmark.Children.AddBookMarkAtStart("Date1", 1);

// Add bookmark for type of test
var paperBookmark = date1Bookmark.Children.AddBookMarkAtStart("Paper", 1);
paperBookmark.Children.AddBookMarkAtEnd("PersonA", 3);
paperBookmark.Children.AddBookMarkAtEnd("PersonB", 4);

// Add bookmark for days
var date2Bookmark = mainBookmark.Children.AddBookMarkAtEnd("Date2", 5);

// Add bookmark for type of test
var computerBookmark = date2Bookmark.Children.AddBookMarkAtStart("Computer", 5);
computerBookmark.Children.AddBookMarkAtEnd("PersonC", 6);
computerBookmark.Children.AddBookMarkAtEnd("PersonD", 7);

pdf.SaveAs("multiLayerBookmarks.pdf");

Imports IronPdf

' Load existing PDF document
Private pdf As PdfDocument = PdfDocument.FromFile("examinationPaper.pdf")

' Assign IPdfBookMark object to a variable
Private mainBookmark = pdf.Bookmarks.AddBookMarkAtEnd("Examination", 0)

' Add bookmark for days
Private date1Bookmark = mainBookmark.Children.AddBookMarkAtStart("Date1", 1)

' Add bookmark for type of test
Private paperBookmark = date1Bookmark.Children.AddBookMarkAtStart("Paper", 1)
paperBookmark.Children.AddBookMarkAtEnd("PersonA", 3)
paperBookmark.Children.AddBookMarkAtEnd("PersonB", 4)

' Add bookmark for days
Dim date2Bookmark = mainBookmark.Children.AddBookMarkAtEnd("Date2", 5)

' Add bookmark for type of test
Dim computerBookmark = date2Bookmark.Children.AddBookMarkAtStart("Computer", 5)
computerBookmark.Children.AddBookMarkAtEnd("PersonC", 6)
computerBookmark.Children.AddBookMarkAtEnd("PersonD", 7)

pdf.SaveAs("multiLayerBookmarks.pdf")

using IronPdf;

var renderer = new ChromePdfRenderer();

// Master switch: auto-generate bookmarks from HTML headings (h1-h6) during rendering
renderer.RenderingOptions.AutoBookmarksFromHeadings = true;

var html = @"
<h1>Annual Report</h1>
<h2>Executive Summary</h2>
<p>Overview of the year.</p>
<h2>Financial Results</h2>
<h3>Revenue</h3>
<h3>Expenses</h3>
<h2>Outlook</h2>
<p>Looking forward.</p>";

var pdf = renderer.RenderHtmlAsPdf(html);

// pdf.Bookmarks is already populated with a hierarchical outline matching the heading structure
pdf.SaveAs("auto-bookmarked.pdf");

Imports IronPdf

Dim renderer As New ChromePdfRenderer()

' Master switch: auto-generate bookmarks from HTML headings (h1-h6) during rendering
renderer.RenderingOptions.AutoBookmarksFromHeadings = True

Dim html As String = "
<h1>Annual Report</h1>
<h2>Executive Summary</h2>
<p>Overview of the year.</p>
<h2>Financial Results</h2>
<h3>Revenue</h3>
<h3>Expenses</h3>
<h2>Outlook</h2>
<p>Looking forward.</p>"

Dim pdf = renderer.RenderHtmlAsPdf(html)

' pdf.Bookmarks is already populated with a hierarchical outline matching the heading structure
pdf.SaveAs("auto-bookmarked.pdf")

renderer.RenderingOptions.AutoBookmarksFromHeadings = true;
renderer.RenderingOptions.AutoBookmarkMaxHeadingLevel = 3;

renderer.RenderingOptions.AutoBookmarksFromHeadings = True
renderer.RenderingOptions.AutoBookmarkMaxHeadingLevel = 3

renderer.RenderingOptions.AutoBookmarksFromHeadings = true;
renderer.RenderingOptions.AutoBookmarkCssSelectors = new[]
{
    "h1",
    ".chapter-title",
    "[data-bookmark]"
};

renderer.RenderingOptions.AutoBookmarksFromHeadings = True
renderer.RenderingOptions.AutoBookmarkCssSelectors = New String() {
    "h1",
    ".chapter-title",
    "[data-bookmark]"
}

using IronPdf;
using System;

var renderer = new ChromePdfRenderer();

// Configure which elements should be queryable after rendering
renderer.RenderingOptions.ElementQuerySelectors = new[] { "h1", ".kpi-card" };

var html = @"
<h1>Q4 Dashboard</h1>
<div class='kpi-card'>Revenue: $1.2M</div>
<div class='kpi-card'>Growth: 18%</div>
<h1>Q3 Comparison</h1>
<div class='kpi-card'>Previous: $1.0M</div>";

var pdf = renderer.RenderHtmlAsPdf(html);

// Retrieve the rendered page location of each matched element
foreach (var location in pdf.GetElementLocations())
{
    Console.WriteLine($"'{location.Text}' on page {location.PageIndex + 1} " +
                      $"at ({location.Rectangle.X}, {location.Rectangle.Y})");
}

pdf.SaveAs("dashboard.pdf");

Imports IronPdf
Imports System

Dim renderer = New ChromePdfRenderer()

' Configure which elements should be queryable after rendering
renderer.RenderingOptions.ElementQuerySelectors = New String() {"h1", ".kpi-card"}

Dim html = "
<h1>Q4 Dashboard</h1>
<div class='kpi-card'>Revenue: $1.2M</div>
<div class='kpi-card'>Growth: 18%</div>
<h1>Q3 Comparison</h1>
<div class='kpi-card'>Previous: $1.0M</div>"

Dim pdf = renderer.RenderHtmlAsPdf(html)

' Retrieve the rendered page location of each matched element
For Each location In pdf.GetElementLocations()
    Console.WriteLine($"'{location.Text}' on page {location.PageIndex + 1} " &
                      $"at ({location.Rectangle.X}, {location.Rectangle.Y})")
Next

pdf.SaveAs("dashboard.pdf")

using IronPdf;
using System;

var renderer = new ChromePdfRenderer();

// Auto-generate bookmarks from top-level headings only
renderer.RenderingOptions.AutoBookmarksFromHeadings = true;
renderer.RenderingOptions.AutoBookmarkMaxHeadingLevel = 2;

// Also track the page location of invoice totals after rendering
renderer.RenderingOptions.ElementQuerySelectors = new[] { ".invoice-total" };

var html = @"
<h1>Invoice #2026-001</h1>
<h2>Line Items</h2>
<p>Services rendered for Q1.</p>
<p class='invoice-total'>Subtotal: $4,500.00</p>
<h1>Invoice #2026-002</h1>
<h2>Line Items</h2>
<p>Consulting hours for Q2.</p>
<p class='invoice-total'>Subtotal: $7,200.00</p>";

var pdf = renderer.RenderHtmlAsPdf(html);

// Bookmarks are populated automatically; locations can be queried after rendering
foreach (var location in pdf.GetElementLocations())
{
    Console.WriteLine($"{location.Text} appears on page {location.PageIndex + 1}");
}

pdf.SaveAs("invoices.pdf");

Imports IronPdf
Imports System

Dim renderer As New ChromePdfRenderer()

' Auto-generate bookmarks from top-level headings only
renderer.RenderingOptions.AutoBookmarksFromHeadings = True
renderer.RenderingOptions.AutoBookmarkMaxHeadingLevel = 2

' Also track the page location of invoice totals after rendering
renderer.RenderingOptions.ElementQuerySelectors = New String() {".invoice-total"}

Dim html As String = "
<h1>Invoice #2026-001</h1>
<h2>Line Items</h2>
<p>Services rendered for Q1.</p>
<p class='invoice-total'>Subtotal: $4,500.00</p>
<h1>Invoice #2026-002</h1>
<h2>Line Items</h2>
<p>Consulting hours for Q2.</p>
<p class='invoice-total'>Subtotal: $7,200.00</p>"

Dim pdf = renderer.RenderHtmlAsPdf(html)

' Bookmarks are populated automatically; locations can be queried after rendering
For Each location In pdf.GetElementLocations()
    Console.WriteLine($"{location.Text} appears on page {location.PageIndex + 1}")
Next

pdf.SaveAs("invoices.pdf")