Jak exportować i zapisywać PDF-y w IronPDF C#

// MVC controller methods for PDF export
public IActionResult DownloadInvoice(int invoiceId)
{
    // Generate your HTML content
    string htmlContent = GenerateInvoiceHtml(invoiceId);

    // Render the PDF with IronPDF
    var renderer = new ChromePdfRenderer();
    PdfDocument pdf = renderer.RenderHtmlAsPdf(htmlContent);

    // Take the PDF stream and rewind it
    MemoryStream stream = pdf.Stream;
    stream.Position = 0;

    // Returning a FileStreamResult prompts a download in the browser
    return new FileStreamResult(stream, "application/pdf")
    {
        FileDownloadName = $"invoice_{invoiceId}.pdf"
    };
}

public IActionResult ViewInvoice(int invoiceId)
{
    var renderer = new ChromePdfRenderer();
    PdfDocument pdf = renderer.RenderHtmlAsPdf(GenerateInvoiceHtml(invoiceId));

    // Returning BinaryData with no filename displays the PDF inline
    return File(pdf.BinaryData, "application/pdf");
}

// MVC controller methods for PDF export
public IActionResult DownloadInvoice(int invoiceId)
{
    // Generate your HTML content
    string htmlContent = GenerateInvoiceHtml(invoiceId);

    // Render the PDF with IronPDF
    var renderer = new ChromePdfRenderer();
    PdfDocument pdf = renderer.RenderHtmlAsPdf(htmlContent);

    // Take the PDF stream and rewind it
    MemoryStream stream = pdf.Stream;
    stream.Position = 0;

    // Returning a FileStreamResult prompts a download in the browser
    return new FileStreamResult(stream, "application/pdf")
    {
        FileDownloadName = $"invoice_{invoiceId}.pdf"
    };
}

public IActionResult ViewInvoice(int invoiceId)
{
    var renderer = new ChromePdfRenderer();
    PdfDocument pdf = renderer.RenderHtmlAsPdf(GenerateInvoiceHtml(invoiceId));

    // Returning BinaryData with no filename displays the PDF inline
    return File(pdf.BinaryData, "application/pdf");
}

// ASP.NET WebForms PDF export
protected void ExportButton_Click(object sender, EventArgs e)
{
    var renderer = new ChromePdfRenderer();

    // Configure rendering options
    renderer.RenderingOptions = new ChromePdfRenderOptions()
    {
        PaperSize = IronPdf.Rendering.PdfPaperSize.Letter,
        PrintHtmlBackgrounds = true,
        CreatePdfFormsFromHtml = true
    };

    // Render from custom HTML
    PdfDocument MyPdfDocument = renderer.RenderHtmlAsPdf(GetReportHtml());

    // Retrieve the PDF bytes
    byte[] Binary = MyPdfDocument.BinaryData;

    // Write the bytes to the response as a download
    Response.Clear();
    Response.ContentType = "application/octet-stream";
    Response.AddHeader("Content-Disposition",
        "attachment; filename=report_" + DateTime.Now.ToString("yyyyMMdd") + ".pdf");
    Context.Response.OutputStream.Write(Binary, 0, Binary.Length);
    Response.Flush();
    Response.End();
}

// ASP.NET WebForms PDF export
protected void ExportButton_Click(object sender, EventArgs e)
{
    var renderer = new ChromePdfRenderer();

    // Configure rendering options
    renderer.RenderingOptions = new ChromePdfRenderOptions()
    {
        PaperSize = IronPdf.Rendering.PdfPaperSize.Letter,
        PrintHtmlBackgrounds = true,
        CreatePdfFormsFromHtml = true
    };

    // Render from custom HTML
    PdfDocument MyPdfDocument = renderer.RenderHtmlAsPdf(GetReportHtml());

    // Retrieve the PDF bytes
    byte[] Binary = MyPdfDocument.BinaryData;

    // Write the bytes to the response as a download
    Response.Clear();
    Response.ContentType = "application/octet-stream";
    Response.AddHeader("Content-Disposition",
        "attachment; filename=report_" + DateTime.Now.ToString("yyyyMMdd") + ".pdf");
    Context.Response.OutputStream.Write(Binary, 0, Binary.Length);
    Response.Flush();
    Response.End();
}

using IronPdf;

var renderer = new ChromePdfRenderer();

// Render the document you want to archive
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Archived Document</h1>");

// Save as a PDF/A-3b file for long-term archiving.
// PdfAVersions controls the conformance level (PdfA1b, PdfA2b, PdfA3b, PdfA4, and others).
pdf.SaveAsPdfA("archive-pdfa.pdf", IronPdf.PdfAVersions.PdfA3b);

using IronPdf;

var renderer = new ChromePdfRenderer();

// Render the document you want to archive
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Archived Document</h1>");

// Save as a PDF/A-3b file for long-term archiving.
// PdfAVersions controls the conformance level (PdfA1b, PdfA2b, PdfA3b, PdfA4, and others).
pdf.SaveAsPdfA("archive-pdfa.pdf", IronPdf.PdfAVersions.PdfA3b);

using IronPdf;

var renderer = new ChromePdfRenderer();

// Render content that should be tagged for assistive technology
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Accessible Document</h1><p>Tagged for screen readers.</p>");

// Save as a PDF/UA-1 file. The last argument sets the document's primary
// language, which screen readers use to choose the correct voice.
pdf.SaveAsPdfUA("accessible-pdfua.pdf", IronPdf.PdfUAVersions.PdfUA1, IronPdf.NaturalLanguages.English_UnitedKingdom);

using IronPdf;

var renderer = new ChromePdfRenderer();

// Render content that should be tagged for assistive technology
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Accessible Document</h1><p>Tagged for screen readers.</p>");

// Save as a PDF/UA-1 file. The last argument sets the document's primary
// language, which screen readers use to choose the correct voice.
pdf.SaveAsPdfUA("accessible-pdfua.pdf", IronPdf.PdfUAVersions.PdfUA1, IronPdf.NaturalLanguages.English_UnitedKingdom);

using IronPdf;
using IronPdf.Rendering;

var renderer = new ChromePdfRenderer();

// Create and save the original revision of the document
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Versioned Document</h1>");
pdf.SaveAs("revision-base.pdf");

// Re-open with change tracking enabled so the next save appends a revision
// instead of rewriting the file. This preserves earlier signed revisions.
PdfDocument loaded = PdfDocument.FromFile("revision-base.pdf", null, null, ChangeTrackingModes.EnableChangeTracking);

// Write an incremental revision on top of the existing bytes
loaded.SaveAsRevision("revision-v2.pdf");

using IronPdf;
using IronPdf.Rendering;

var renderer = new ChromePdfRenderer();

// Create and save the original revision of the document
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Versioned Document</h1>");
pdf.SaveAs("revision-base.pdf");

// Re-open with change tracking enabled so the next save appends a revision
// instead of rewriting the file. This preserves earlier signed revisions.
PdfDocument loaded = PdfDocument.FromFile("revision-base.pdf", null, null, ChangeTrackingModes.EnableChangeTracking);

// Write an incremental revision on top of the existing bytes
loaded.SaveAsRevision("revision-v2.pdf");

using IronPdf;
using System.Threading.Tasks;

var renderer = new ChromePdfRenderer();

// Render off the calling thread so a web request or UI stays responsive
PdfDocument pdf = await renderer.RenderHtmlAsPdfAsync("<h1>Async Generated PDF</h1>");

// SaveAs writes the finished document to disk once the render completes
pdf.SaveAs("async-render.pdf");

using IronPdf;
using System.Threading.Tasks;

var renderer = new ChromePdfRenderer();

// Render off the calling thread so a web request or UI stays responsive
PdfDocument pdf = await renderer.RenderHtmlAsPdfAsync("<h1>Async Generated PDF</h1>");

// SaveAs writes the finished document to disk once the render completes
pdf.SaveAs("async-render.pdf");