C#を使用してPDFにページ番号を追加する方法</#35;

using IronPdf;

// Create text header
TextHeaderFooter textHeader = new TextHeaderFooter()
{
    CenterText = "{page} of {total-pages}"
};

// Create html footer
HtmlHeaderFooter htmlFooter = new HtmlHeaderFooter()
{
    HtmlFragment = "<center><i>{page} of {total-pages}<i></center>"
};

// Render a new PDF
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Hello World!</h1>");

// Add header and footer
pdf.AddTextHeaders(textHeader);
pdf.AddHtmlFooters(htmlFooter);

pdf.SaveAs("pdfWithPageNumber.pdf");

using IronPdf;

// Add header and footer to rendering options
ChromePdfRenderer renderer = new ChromePdfRenderer();
renderer.RenderingOptions.TextHeader = new TextHeaderFooter()
{
    CenterText = "{page} of {total-pages}"
};
renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter()
{
    HtmlFragment = "<center><i>{page} of {total-pages}<i></center>"
};

string html = @"
    <h1>Hello World!</h1>
<div style='page-break-after: always;'/>
    <h1>2nd Page!</h1>";

// Render new PDF
PdfDocument pdf = renderer.RenderHtmlAsPdf(html);

pdf.SaveAs("applyPageNumberWithRenderingOptions.pdf");

using IronPdf;
using System.Linq;
using System.Collections.Generic;

string multi_page_html = @"
    <p>This is the 1st Page</p>
<div style = 'page-break-after: always;' ></div>
    <p>This is the 2nd Page</p>
<div style = 'page-break-after: always;' ></div>
    <p>This is the 3rd Page</p>
<div style = 'page-break-after: always;' ></div>
    <p>This is the 4th Page</p>
<div style = 'page-break-after: always;' ></div>
    <p>This is the 5th Page</p>
<div style = 'page-break-after: always;' ></div>
    <p>This is the 6th Page</p>
<div style = 'page-break-after: always;' ></div>
    <p>This is the 7th Page</p>";

// Create header
HtmlHeaderFooter header = new HtmlHeaderFooter()
{
    HtmlFragment = "<center><i>{page} of {total-pages}<i></center>"
};

// Render PDF
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf(multi_page_html);

// Create a Page Range 0..6
var allPageIndices = Enumerable.Range(0, pdf.PageCount);