如何在 C# 中导出 PDF/A、PDF/A-3 或 PDF/A-4 格式文档;

using IronPdf;

// Create a PdfDocument object or open any PDF File
PdfDocument pdf = PdfDocument.FromFile("wikipedia.pdf");

// Use the SaveAsPdfA method to save to file
pdf.SaveAsPdfA("pdf-a3-wikipedia.pdf", PdfAVersions.PdfA3b);

Imports IronPdf

' Create a PdfDocument object or open any PDF File
Private pdf As PdfDocument = PdfDocument.FromFile("wikipedia.pdf")

' Use the SaveAsPdfA method to save to file
pdf.SaveAsPdfA("pdf-a3-wikipedia.pdf", PdfAVersions.PdfA3b)

using IronPdf;

// Use the Chrome Renderer to make beautiful HTML designs
var chromeRenderer = new ChromePdfRenderer();

// Render an HTML design as a PdfDocument object using Chrome
PdfDocument pdf = chromeRenderer.RenderHtmlAsPdf("design.html");

// Use the SaveAsPdfA method to save to file
pdf.SaveAsPdfA("design-accessible.pdf", PdfAVersions.PdfA3b);

Imports IronPdf

' Use the Chrome Renderer to make beautiful HTML designs
Private chromeRenderer = New ChromePdfRenderer()

' Render an HTML design as a PdfDocument object using Chrome
Private pdf As PdfDocument = chromeRenderer.RenderHtmlAsPdf("design.html")

' Use the SaveAsPdfA method to save to file
pdf.SaveAsPdfA("design-accessible.pdf", PdfAVersions.PdfA3b)

using IronPdf;

// Use the Chrome Renderer to make beautiful HTML designs from URLs
var chromeRenderer = new ChromePdfRenderer();

// Render a Website as a PdfDocument object using Chrome
PdfDocument pdf = chromeRenderer.RenderUrlAsPdf("https://www.microsoft.com");

// Use the SaveAsPdfA method to save to file
pdf.SaveAsPdfA("website-accessible.pdf", PdfAVersions.PdfA3b);

Imports IronPdf

' Use the Chrome Renderer to make beautiful HTML designs from URLs
Private chromeRenderer = New ChromePdfRenderer()

' Render a Website as a PdfDocument object using Chrome
Private pdf As PdfDocument = chromeRenderer.RenderUrlAsPdf("https://www.microsoft.com")

' Use the SaveAsPdfA method to save to file
pdf.SaveAsPdfA("website-accessible.pdf", PdfAVersions.PdfA3b)

using IronPdf;
using System.Collections.Generic;

PdfDocument pdf = new PdfDocument("Google.pdf");

// Initialize collection of embed file as string of path
IEnumerable<string> embedPaths = new[] { "File1.xml", "File2.png" };

// Convert to Pdf/A-3B with embeded files
pdf.ConvertToPdfA(embedPaths);

Imports IronPdf
Imports System.Collections.Generic

Private pdf As New PdfDocument("Google.pdf")

' Initialize collection of embed file as string of path
Private embedPaths As IEnumerable(Of String) = { "File1.xml", "File2.png" }

' Convert to Pdf/A-3B with embeded files
pdf.ConvertToPdfA(embedPaths)

using IronPdf;
using System.Collections.Generic;
using System.IO;


PdfDocument pdf = new PdfDocument("Google.pdf");

// Initialize collection of embed file as Bytes and their file type
byte[] fileData1 = File.ReadAllBytes("File1.png");
byte[] fileData2 = File.ReadAllBytes("File2.xml");

var embedFileConfig1 = new EmbedFileConfiguration(EmbedFileType.png);
embedFileConfig1.EmbedFileName = "logo.png";

var embedFileConfig2 = new EmbedFileConfiguration(EmbedFileType.xml)
{
    EmbedFileName = "supportSystem.xml",
    AFDesc = "Internal system",
    ConformanceLevel = ConformanceLevel.XRECHNUNG,
    SchemaNamespace = SchemaNamespace.Zugferd1,
    SchemaPrefix = SchemaPrefix.rsm,
    PropertyVersion = PropertyVersion.v1p0,
    AFRelationship = AFRelationship.Supplement,
};

IEnumerable<EmbedFileByte> embedBytes = new[]
{
    new EmbedFileByte(fileData1, embedFileConfig1),
    new EmbedFileByte(fileData2, embedFileConfig2)
};

// Convert to Pdf/A-3B with embeded files
pdf.ConvertToPdfA(embedBytes).SaveAs("PdfACompliance.pdf");

Imports IronPdf
Imports System.Collections.Generic
Imports System.IO


Private pdf As New PdfDocument("Google.pdf")

' Initialize collection of embed file as Bytes and their file type
Private fileData1() As Byte = File.ReadAllBytes("File1.png")
Private fileData2() As Byte = File.ReadAllBytes("File2.xml")

Private embedFileConfig1 = New EmbedFileConfiguration(EmbedFileType.png)
embedFileConfig1.EmbedFileName = "logo.png"

Dim embedFileConfig2 = New EmbedFileConfiguration(EmbedFileType.xml) With {
	.EmbedFileName = "supportSystem.xml",
	.AFDesc = "Internal system",
	.ConformanceLevel = ConformanceLevel.XRECHNUNG,
	.SchemaNamespace = SchemaNamespace.Zugferd1,
	.SchemaPrefix = SchemaPrefix.rsm,
	.PropertyVersion = PropertyVersion.v1p0,
	.AFRelationship = AFRelationship.Supplement
}

Dim embedBytes As IEnumerable(Of EmbedFileByte) = {
	New EmbedFileByte(fileData1, embedFileConfig1),
	New EmbedFileByte(fileData2, embedFileConfig2)
}

' Convert to Pdf/A-3B with embeded files
pdf.ConvertToPdfA(embedBytes).SaveAs("PdfACompliance.pdf")

using IronPdf;
using System.Collections.Generic;
using System.IO;

PdfDocument pdf = new PdfDocument("Google.pdf");

// Initialize collection of embed file as Stream and their file type
Stream stream1 = new MemoryStream(File.ReadAllBytes("File1.png"));
Stream stream2 = new MemoryStream(File.ReadAllBytes("File2.xml"));

var embedFileConfig1 = new EmbedFileConfiguration(EmbedFileType.png);
embedFileConfig1.EmbedFileName = "logo.png";

var embedFileConfig2 = new EmbedFileConfiguration(EmbedFileType.xml)
{
    EmbedFileName = "supportSystem.xml",
    AFDesc = "Internal system",
    ConformanceLevel = ConformanceLevel.XRECHNUNG,
    SchemaNamespace = SchemaNamespace.Zugferd1,
    SchemaPrefix = SchemaPrefix.rsm,
    PropertyVersion = PropertyVersion.v1p0,
    AFRelationship = AFRelationship.Supplement,
};

IEnumerable<EmbedFileStream> embedStreams = new[]
{
    new EmbedFileStream(stream1, embedFileConfig1),
    new EmbedFileStream(stream2, embedFileConfig2)
};

// Convert to Pdf/A-3B with embeded files
pdf.ConvertToPdfA(embedStreams).SaveAs("PdfACompliance.pdf");

Imports IronPdf
Imports System.Collections.Generic
Imports System.IO

Private pdf As New PdfDocument("Google.pdf")

' Initialize collection of embed file as Stream and their file type
Private stream1 As Stream = New MemoryStream(File.ReadAllBytes("File1.png"))
Private stream2 As Stream = New MemoryStream(File.ReadAllBytes("File2.xml"))

Private embedFileConfig1 = New EmbedFileConfiguration(EmbedFileType.png)
embedFileConfig1.EmbedFileName = "logo.png"

Dim embedFileConfig2 = New EmbedFileConfiguration(EmbedFileType.xml) With {
	.EmbedFileName = "supportSystem.xml",
	.AFDesc = "Internal system",
	.ConformanceLevel = ConformanceLevel.XRECHNUNG,
	.SchemaNamespace = SchemaNamespace.Zugferd1,
	.SchemaPrefix = SchemaPrefix.rsm,
	.PropertyVersion = PropertyVersion.v1p0,
	.AFRelationship = AFRelationship.Supplement
}

Dim embedStreams As IEnumerable(Of EmbedFileStream) = {
	New EmbedFileStream(stream1, embedFileConfig1),
	New EmbedFileStream(stream2, embedFileConfig2)
}

' Convert to Pdf/A-3B with embeded files
pdf.ConvertToPdfA(embedStreams).SaveAs("PdfACompliance.pdf")

var config = new EmbedFileConfiguration
{
    EmbedFileName = "Attachment.xml",
    AFDesc = "Associated File Description",
    ConformanceLevel = ConformanceLevel.EN16931,
    SchemaNamespace = SchemaNamespace.facturX,
    SchemaPrefix = SchemaPrefix.fx,
    PropertyVersion = PropertyVersion.v1,
    AFRelationship = AFRelationship.Alternative
};

 // Load a PDF document
 var document = PdfDocument.FromFile("wikipedia.pdf");

 // Configure embedded file parameters
 document.EmbedFileFromFilePath("path/to/attachment", config);

 // Save the document as PDF/A-3b
 document.SaveAsPdfA3B("output-with-configured-attachment.pdf");

Option Strict On



Dim config As New EmbedFileConfiguration With {
    .EmbedFileName = "Attachment.xml",
    .AFDesc = "Associated File Description",
    .ConformanceLevel = ConformanceLevel.EN16931,
    .SchemaNamespace = SchemaNamespace.facturX,
    .SchemaPrefix = SchemaPrefix.fx,
    .PropertyVersion = PropertyVersion.v1,
    .AFRelationship = AFRelationship.Alternative
}

' Load a PDF document
Dim document = PdfDocument.FromFile("wikipedia.pdf")

' Configure embedded file parameters
document.EmbedFileFromFilePath("path/to/attachment", config)

' Save the document as PDF/A-3b
document.SaveAsPdfA3B("output-with-configured-attachment.pdf")

using IronPdf;

// Load the environmental impact assessment document
PdfDocument pdf = PdfDocument.FromFile("ENV-2026-1847-Assessment-Report.pdf");

// Save as PDF/A-4 compliant document for long-term archival
pdf.SaveAsPdfA("ENV-2026-1847-Report-PDFA4Compliant.pdf", PdfAVersions.PdfA4);

Imports IronPdf

' Load the environmental impact assessment document
Dim pdf As PdfDocument = PdfDocument.FromFile("ENV-2026-1847-Assessment-Report.pdf")

' Save as PDF/A-4 compliant document for long-term archival
pdf.SaveAsPdfA("ENV-2026-1847-Report-PDFA4Compliant.pdf", PdfAVersions.PdfA4)