如何將多個PDF文件合併為一個文檔

// Install the IronPdf package via NuGet to work with PDF documents.
using IronPdf;

class PDFMerger
{
    static void Main()
    {
        // Define HTML content for two PDF documents
        var html_a = @"<p> [PDF_A] </p>
                       <p> [PDF_A] 1st Page </p>
                       <div style='page-break-after: always;'></div>
                       <p> [PDF_A] 2nd Page</p>";

        var html_b = @"<p> [PDF_B] </p>
                       <p> [PDF_B] 1st Page </p>
                       <div style='page-break-after: always;'></div>
                       <p> [PDF_B] 2nd Page</p>";

        // Initialize a new pdf renderer using Chrome
        var Renderer = new IronPdf.ChromePdfRenderer();

        // Render HTML strings as PDF documents
        var pdfdoc_a = Renderer.RenderHtmlAsPdf(html_a);
        var pdfdoc_b = Renderer.RenderHtmlAsPdf(html_b);

        // Merge the two PDFs into a single document
        var merged = IronPdf.PdfDocument.Merge(pdfdoc_a, pdfdoc_b);

        // Save the combined PDF to the file system
        merged.SaveAs("Merged.pdf");
    }
}

' Install the IronPdf package via NuGet to work with PDF documents.
Imports IronPdf

Friend Class PDFMerger
	Shared Sub Main()
		' Define HTML content for two PDF documents
		Dim html_a = "<p> [PDF_A] </p>
                       <p> [PDF_A] 1st Page </p>
                       <div style='page-break-after: always;'></div>
                       <p> [PDF_A] 2nd Page</p>"

		Dim html_b = "<p> [PDF_B] </p>
                       <p> [PDF_B] 1st Page </p>
                       <div style='page-break-after: always;'></div>
                       <p> [PDF_B] 2nd Page</p>"

		' Initialize a new pdf renderer using Chrome
		Dim Renderer = New IronPdf.ChromePdfRenderer()

		' Render HTML strings as PDF documents
		Dim pdfdoc_a = Renderer.RenderHtmlAsPdf(html_a)
		Dim pdfdoc_b = Renderer.RenderHtmlAsPdf(html_b)

		' Merge the two PDFs into a single document
		Dim merged = IronPdf.PdfDocument.Merge(pdfdoc_a, pdfdoc_b)

		' Save the combined PDF to the file system
		merged.SaveAs("Merged.pdf")
	End Sub
End Class