OCR工作流程的多阶段构建

using IronPdf;

var renderer = new ChromePdfRenderer();

// 选项al: wait a short time for the page to finish loading
renderer.RenderingOptions.WaitFor.RenderDelay(500);

var pdf = renderer.RenderUrlAsPdf("https://en.wikipedia.org/wiki/PDF");
pdf.SaveAs("wikipedia-pdf-article.pdf");

Imports IronPdf

Dim renderer = New ChromePdfRenderer()

' 选项al: wait a short time for the page to finish loading
renderer.RenderingOptions.WaitFor.RenderDelay(500)

Dim pdf = renderer.RenderUrlAsPdf("https://en.wikipedia.org/wiki/PDF")
pdf.SaveAs("wikipedia-pdf-article.pdf")

using IronPdf;

var renderer = new ChromePdfRenderer();

// Enable JavaScript for pages that load content after the initial HTML response
renderer.RenderingOptions.EnableJavaScript = true;
renderer.RenderingOptions.WaitFor.NetworkIdle(500);

// Provide credentials for authenticated internal pages
renderer.LoginCredentials = new ChromeHttpLoginCredentials()
{
    NetworkUsername = "service-account",
    NetworkPassword = "secure-password"
};

var pdf = renderer.RenderUrlAsPdf("https://app.internal/reports/monthly");
pdf.SaveAs("monthly-report.pdf");

Imports IronPdf

Dim renderer As New ChromePdfRenderer()

' Enable JavaScript for pages that load content after the initial HTML response
renderer.RenderingOptions.EnableJavaScript = True
renderer.RenderingOptions.WaitFor.NetworkIdle(500)

' Provide credentials for authenticated internal pages
renderer.LoginCredentials = New ChromeHttpLoginCredentials() With {
    .NetworkUsername = "service-account",
    .NetworkPassword = "secure-password"
}

Dim pdf = renderer.RenderUrlAsPdf("https://app.internal/reports/monthly")
pdf.SaveAs("monthly-report.pdf")

using IronPdf;

protected void Page_Load(object sender, EventArgs e)
{
    // Configure paper settings before rendering
    IronPdf.AspxToPdf.RenderingOptions.PaperSize = IronPdf.Rendering.PdfPaperSize.Letter;
    IronPdf.AspxToPdf.RenderingOptions.MarginTop = 20;
    IronPdf.AspxToPdf.RenderingOptions.MarginBottom = 20;

    // Convert the current ASPX page to PDF and send it to the browser
    IronPdf.AspxToPdf.RenderThisPageAsPdf(
        IronPdf.AspxToPdf.FileBehavior.InBrowser,
        "invoice-" + DateTime.UtcNow.ToString("yyyy-MM-dd") + ".pdf"
    );
}

Imports IronPdf

Protected Sub Page_Load(sender As Object, e As EventArgs)
    ' Configure paper settings before rendering
    IronPdf.AspxToPdf.RenderingOptions.PaperSize = IronPdf.Rendering.PdfPaperSize.Letter
    IronPdf.AspxToPdf.RenderingOptions.MarginTop = 20
    IronPdf.AspxToPdf.RenderingOptions.MarginBottom = 20

    ' Convert the current ASPX page to PDF and send it to the browser
    IronPdf.AspxToPdf.RenderThisPageAsPdf(
        IronPdf.AspxToPdf.FileBehavior.InBrowser,
        "invoice-" & DateTime.UtcNow.ToString("yyyy-MM-dd") & ".pdf"
    )
End Sub

using IronPdf;

var renderer = new ChromePdfRenderer();

// Simple text header with divider line
renderer.RenderingOptions.TextHeader = new TextHeaderFooter()
{
    CenterText = "Quarterly Financial Report",
    LeftText = "Document ID: {document-id}",
    RightText = "{date:yyyy-MM-dd}",
    DrawDividerLine = true,
    FontSize = 10,
    FontFamily = "Arial"
};

// HTML footer with branded layout
renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter()
{
    HtmlFragment = @"
        <div style='border-top: 1px solid #ccc; padding: 8px; font-size: 10px;
                    display: flex; justify-content: space-between;'>
            <span>© 2026 Enterprise Corp</span>
            <span>Page {page} of {total-pages}</span>
            <span>Classification: Internal</span>
        </div>",
    MaxHeight = 40
};

renderer.RenderingOptions.MarginTop = 40;
renderer.RenderingOptions.MarginBottom = 40;

var pdf = renderer.RenderHtmlAsPdf("<h1>Report Content</h1><p>Financial data goes here.</p>");
pdf.SaveAs("report-with-headers.pdf");

Imports IronPdf

Dim renderer = New ChromePdfRenderer()

' Simple text header with divider line
renderer.RenderingOptions.TextHeader = New TextHeaderFooter() With {
    .CenterText = "Quarterly Financial Report",
    .LeftText = "Document ID: {document-id}",
    .RightText = "{date:yyyy-MM-dd}",
    .DrawDividerLine = True,
    .FontSize = 10,
    .FontFamily = "Arial"
}

' HTML footer with branded layout
renderer.RenderingOptions.HtmlFooter = New HtmlHeaderFooter() With {
    .HtmlFragment = "
        <div style='border-top: 1px solid #ccc; padding: 8px; font-size: 10px;
                    display: flex; justify-content: space-between;'>
            <span>© 2026 Enterprise Corp</span>
            <span>Page {page} of {total-pages}</span>
            <span>Classification: Internal</span>
        </div>",
    .MaxHeight = 40
}

renderer.RenderingOptions.MarginTop = 40
renderer.RenderingOptions.MarginBottom = 40

Dim pdf = renderer.RenderHtmlAsPdf("<h1>Report Content</h1><p>Financial data goes here.</p>")
pdf.SaveAs("report-with-headers.pdf")

using IronPdf;

var renderer = new ChromePdfRenderer();

// Set paper dimensions and orientation
renderer.RenderingOptions.PaperSize = IronPdf.Rendering.PdfPaperSize.Letter;
renderer.RenderingOptions.PaperOrientation = IronPdf.Rendering.PdfPaperOrientation.Portrait;

// Define margins (values in millimeters)
renderer.RenderingOptions.MarginTop = 25;
renderer.RenderingOptions.MarginBottom = 25;
renderer.RenderingOptions.MarginLeft = 19;
renderer.RenderingOptions.MarginRight = 19;

// Use print-specific CSS rules and set output DPI
renderer.RenderingOptions.CssMediaType = IronPdf.Rendering.PdfCssMediaType.Print;
renderer.RenderingOptions.DPI = 300;

// Preserve HTML form elements as interactive PDF form fields
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

var pdf = renderer.RenderHtmlAsPdf("<h1>Custom Layout Document</h1><p>Content with configured layout.</p>");
pdf.SaveAs("configured-output.pdf");

Imports IronPdf

Dim renderer As New ChromePdfRenderer()

' Set paper dimensions and orientation
renderer.RenderingOptions.PaperSize = IronPdf.Rendering.PdfPaperSize.Letter
renderer.RenderingOptions.PaperOrientation = IronPdf.Rendering.PdfPaperOrientation.Portrait

' Define margins (values in millimeters)
renderer.RenderingOptions.MarginTop = 25
renderer.RenderingOptions.MarginBottom = 25
renderer.RenderingOptions.MarginLeft = 19
renderer.RenderingOptions.MarginRight = 19

' Use print-specific CSS rules and set output DPI
renderer.RenderingOptions.CssMediaType = IronPdf.Rendering.PdfCssMediaType.Print
renderer.RenderingOptions.DPI = 300

' Preserve HTML form elements as interactive PDF form fields
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

Dim pdf = renderer.RenderHtmlAsPdf("<h1>Custom Layout Document</h1><p>Content with configured layout.</p>")
pdf.SaveAs("configured-output.pdf")

using IronPdf;
using Microsoft.AspNetCore.Mvc;

public class ReportsController : Controller
{
    public IActionResult GeneratePdf()
    {
        var renderer = new ChromePdfRenderer();

        renderer.RenderingOptions.PaperSize = IronPdf.Rendering.PdfPaperSize.Letter;
        renderer.RenderingOptions.MarginTop = 20;
        renderer.RenderingOptions.MarginBottom = 20;

        // Add a text footer with page numbers
        renderer.RenderingOptions.TextFooter = new TextHeaderFooter()
        {
            CenterText = "Page {page} of {total-pages}",
            FontSize = 9
        };

        // Build the URL to the internal report page and render it
        string reportUrl = $"{Request.Scheme}://{Request.Host}/reports/quarterly";
        var pdf = renderer.RenderUrlAsPdf(reportUrl);

        return File(pdf.BinaryData, "application/pdf", "quarterly-report.pdf");
    }
}

Imports IronPdf
Imports Microsoft.AspNetCore.Mvc

Public Class ReportsController
    Inherits Controller

    Public Function GeneratePdf() As IActionResult
        Dim renderer = New ChromePdfRenderer()

        renderer.RenderingOptions.PaperSize = IronPdf.Rendering.PdfPaperSize.Letter
        renderer.RenderingOptions.MarginTop = 20
        renderer.RenderingOptions.MarginBottom = 20

        ' Add a text footer with page numbers
        renderer.RenderingOptions.TextFooter = New TextHeaderFooter() With {
            .CenterText = "Page {page} of {total-pages}",
            .FontSize = 9
        }

        ' Build the URL to the internal report page and render it
        Dim reportUrl As String = $"{Request.Scheme}://{Request.Host}/reports/quarterly"
        Dim pdf = renderer.RenderUrlAsPdf(reportUrl)

        Return File(pdf.BinaryData, "application/pdf", "quarterly-report.pdf")
    End Function
End Class