如何在ASP.NET中打印PDF文件？

您可以通过使用IronPDF在ASP.NET中打印PDF文件，该工具通过其综合的API简化了过程，允许轻松集成和可靠的打印功能。

在ASP.NET应用程序中打印PDF时的常见挑战是什么？

常见挑战包括管理服务器-客户端架构的复杂性和生成一致的打印输出。IronPDF通过为无缝集成和可靠的结果设计的功能解决了这些挑战。

IronPDF是否可以用于生成特定用途的PDF文档，如发票或报告？

是的，IronPDF可以用于生成多种用途的PDF，例如发票、报告和运单标签，为开发人员提供多功能的文档生成工具。

IronPDF提供了哪些功能来支持ASP.NET中的PDF打印？

IronPDF提供了HTML到PDF转换、CSS样式和JavaScript支持等功能，这些都促进了ASP.NET应用程序中有效的PDF打印。

使用IronPDF在ASP.NET中是否可以自动化PDF打印？

是的，IronPDF允许在ASP.NET应用程序中自动化PDF打印，使开发人员能够简化工作流程并提高生产力。

IronPDF如何处理服务器-客户端架构的复杂性？

IronPDF设计用于处理服务器-客户端架构的复杂性，提供强大的API，简化了从服务器端直接生成和打印PDF的过程。

IronPDF支持在打印前对PDF文档的自定义吗？

IronPDF支持对PDF文档进行广泛的自定义选项，允许开发人员在打印前控制布局、内容和设计。

IronPDF支持哪些编程语言用于PDF打印？

IronPDF兼容C#和其他.NET语言，是在ASP.NET框架下工作的开发人员的理想选择。

IronPDF可以与其他.NET应用程序集成吗？

是的，IronPDF可以轻松集成到其他.NET应用程序中，允许无缝添加到现有系统中，并增强PDF管理功能。

IronPDF如何确保在不同设备上的一致打印输出？

IronPDF通过支持高逼真度渲染和HTML、CSS、JavaScript到PDF的准确转换确保一致的打印输出，无论用于打印的设备是什么。

IronPDF 是否兼容 .NET 10？升级到 .NET 10 能带来哪些好处？

是的，IronPDF 完全兼容 .NET 10，包括面向 Windows、Linux、macOS 和容器化环境的 .NET 10 项目。升级到 .NET 10 可解锁诸多改进，例如降低内存占用、提升性能、使用新的 C# 语言特性，以及 ASP.NET Core 10 中可简化 PDF 生成和集成的增强功能。

C# PDF库

Explore IronPDF 免费试用

HTML到PDF

Online Demo 查看所有%s代码示例

using IronPdf;

// Disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate Renderer
var renderer = new ChromePdfRenderer();

// Create a PDF from a HTML string using C#
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>");

// Export to a file or Stream
pdf.SaveAs("output.pdf");

// Advanced Example with HTML Assets
// Load external html assets: Images, CSS and JavaScript.
// An optional BasePath 'C:\site\assets\' is set as the file location to load assets from
var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\");
myAdvancedPdf.SaveAs("html-with-assets.pdf");

using IronPdf;

// Disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate Renderer
var renderer = new ChromePdfRenderer();

// Create a PDF from a HTML string using C#
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>");

// Export to a file or Stream
pdf.SaveAs("output.pdf");

// Advanced Example with HTML Assets
// Load external html assets: Images, CSS and JavaScript.
// An optional BasePath 'C:\site\assets\' is set as the file location to load assets from
var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\");
myAdvancedPdf.SaveAs("html-with-assets.pdf");

PM >Install-Package IronPdf

Install-Package IronPdf

使用IRONPDF

如何使用IronPDF创建Blazor PDF查看器

Curtis Chau

Updated: 2026年4月23日

ASP .NET 打印 PDF 文件任务通常涉及开发人员经常遇到的独特挑战。无论您是为发票、报告或运输标签生成 PDF 文档，实现可靠的打印功能都需要导航服务器-客户端架构的复杂性。

在本文中，我们将向您展示如何使用PDF打印任务和IronPDF的强大.NET PDF库。

理解挑战

传统的桌面应用程序可以直接访问默认打印机，但 ASP.NET Core 应用程序在打印 PDF 文件时面临一些障碍：

// This fails in ASP.NET - wrong approach
Process.Start(@"C:\Files\document.pdf"); // Works locally, crashes on server

// This fails in ASP.NET - wrong approach
Process.Start(@"C:\Files\document.pdf"); // Works locally, crashes on server

' This fails in ASP.NET - wrong approach
Process.Start("C:\Files\document.pdf") ' Works locally, crashes on server

' This fails in ASP.NET - wrong approach
Process.Start("C:\Files\document.pdf") ' Works locally, crashes on server

上面的代码说明了一个常见的错误。服务器环境缺乏直接打印机访问权限，并且由于 IIS 权限限制，系统会抛出错误。另一个需要记住的事情是，Web 应用程序必须有效地处理服务器端和客户端打印场景。

开始使用 IronPDF

IronPDF 提供了一个完整的 .NET Core解决方案来生成 PDF 文档并打印它们，而无需像 Adobe Reader 这样的外部依赖。让我们使用 NuGet 安装 IronPDF 包：

PM > Install-Package IronPdf

Install-Package IronPdf

这个 .NET 库可以跨操作系统无缝运行，消除了其他库困扰的兼容性问题。这款工具在微软 Windows 和其他操作系统环境中效果良好。

使用默认打印机在服务器端创建和打印 PDF 文档

以下是如何从 HTML 标记在您的 ASP.NET 控制器中生成和打印 PDF 文档：

using IronPdf;
using Microsoft.AspNetCore.Mvc;
using System.Drawing; 
public class PdfController : Controller
{
    public IActionResult Index()
    {
        // Initialize the renderer
        var renderer = new ChromePdfRenderer();
        // Configure print-optimized settings
        renderer.RenderingOptions.PrintHtmlBackgrounds = true;
        renderer.RenderingOptions.MarginBottom = 10;
        renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;
        // Generate PDF from HTML
        var pdf = renderer.RenderHtmlAsPdf("<h1>Invoice</h1><p>Total: $999</p>");
        // Print to default printer
        pdf.Print();
        return Ok("Document sent to printer");
    }
}

using IronPdf;
using Microsoft.AspNetCore.Mvc;
using System.Drawing; 
public class PdfController : Controller
{
    public IActionResult Index()
    {
        // Initialize the renderer
        var renderer = new ChromePdfRenderer();
        // Configure print-optimized settings
        renderer.RenderingOptions.PrintHtmlBackgrounds = true;
        renderer.RenderingOptions.MarginBottom = 10;
        renderer.RenderingOptions.CssMediaType = PdfCssMediaType.Print;
        // Generate PDF from HTML
        var pdf = renderer.RenderHtmlAsPdf("<h1>Invoice</h1><p>Total: $999</p>");
        // Print to default printer
        pdf.Print();
        return Ok("Document sent to printer");
    }
}

ChromePdfRenderer 负责转换，同时保留 CSS 样式和字体大小格式。此示例显示了如何在没有用户交互的情况下基本打印到默认打印机。

输出

网络打印机配置

对于需要特定打印机路由的企业环境：

public IActionResult PrintToNetworkPrinter(string filePath)
{
    // Load existing PDF file
    var pdfDocument = PdfDocument.FromFile(filePath);
    // Get print document for advanced settings
    var printDocument = pdfDocument.GetPrintDocument();
    // Specify network printer
    printDocument.PrinterSettings.PrinterName = @"\\server\printer";
    printDocument.PrinterSettings.Copies = 2;
    // Configure page settings
    printDocument.DefaultPageSettings.Landscape = false;
    var renderer = printDocument.PrinterSettings.PrinterResolution;
    // Execute print
    printDocument.Print();
    return Json(new { success = true });
}

public IActionResult PrintToNetworkPrinter(string filePath)
{
    // Load existing PDF file
    var pdfDocument = PdfDocument.FromFile(filePath);
    // Get print document for advanced settings
    var printDocument = pdfDocument.GetPrintDocument();
    // Specify network printer
    printDocument.PrinterSettings.PrinterName = @"\\server\printer";
    printDocument.PrinterSettings.Copies = 2;
    // Configure page settings
    printDocument.DefaultPageSettings.Landscape = false;
    var renderer = printDocument.PrinterSettings.PrinterResolution;
    // Execute print
    printDocument.Print();
    return Json(new { success = true });
}

Public Function PrintToNetworkPrinter(filePath As String) As IActionResult
    ' Load existing PDF file
    Dim pdfDocument = PdfDocument.FromFile(filePath)
    ' Get print document for advanced settings
    Dim printDocument = pdfDocument.GetPrintDocument()
    ' Specify network printer
    printDocument.PrinterSettings.PrinterName = "\\server\printer"
    printDocument.PrinterSettings.Copies = 2
    ' Configure page settings
    printDocument.DefaultPageSettings.Landscape = False
    Dim renderer = printDocument.PrinterSettings.PrinterResolution
    ' Execute print
    printDocument.Print()
    Return Json(New With {.success = True})
End Function

Public Function PrintToNetworkPrinter(filePath As String) As IActionResult
    ' Load existing PDF file
    Dim pdfDocument = PdfDocument.FromFile(filePath)
    ' Get print document for advanced settings
    Dim printDocument = pdfDocument.GetPrintDocument()
    ' Specify network printer
    printDocument.PrinterSettings.PrinterName = "\\server\printer"
    printDocument.PrinterSettings.Copies = 2
    ' Configure page settings
    printDocument.DefaultPageSettings.Landscape = False
    Dim renderer = printDocument.PrinterSettings.PrinterResolution
    ' Execute print
    printDocument.Print()
    Return Json(New With {.success = True})
End Function

这种方法提供了对打印机设置的完全控制，包括纸张格式和分辨率，这对于正确的绘图和布局至关重要。

输出

如何在ASP.NET中以编程方式打印PDF文件：图2 - 使用网络打印打印PDF

打印确认

如何在ASP.NET中以编程方式打印PDF文件：图3 - PDF打印作业成功消息

客户端打印策略

由于浏览器限制直接访问打印机，通过提供 PDF 文件下载来实现客户端打印：

public IActionResult GetRawPrintablePdf()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf(GetInvoiceHtml());
        // This header tells the browser to display the file inline.
        // We use IHeaderDictionary indexer to prevent ArgumentException.
        **HttpContext context**.Response.Headers["Content-Disposition"] = "inline; filename=invoice.pdf";
        return File(pdf.BinaryData, "application/pdf");
    }
    public IActionResult PrintUsingClientWrapper()
    {
        var printUrl = Url.Action(nameof(GetRawPrintablePdf));
        // Use a simple HTML/JavaScript wrapper to force the print dialog
        var html = new StringBuilder();
        html.AppendLine("<!DOCTYPE html>");
        html.AppendLine("<html lang=\"en\">");
        html.AppendLine("<head>");
        html.AppendLine("    <title>Print Document</title>");
        html.AppendLine("</head>");
        html.AppendLine("<body>");
        // Load the PDF from the 'GetRawPrintablePdf' action into an invisible iframe.
        html.AppendLine($"    <iframe src='{printUrl}' style='position:absolute; top:0; left:0; width:100%; height:100%; border:none;'></iframe>");
        html.AppendLine("    <script>");
        // Wait for the iframe (and thus the PDF) to load, then trigger the print dialog.
        html.AppendLine("        window.onload = function() {");
        html.AppendLine("            // Wait briefly to ensure the iframe content is rendered before printing.");
        html.AppendLine("            setTimeout(function() {");
        html.AppendLine("                window.print();");
        html.AppendLine("            }, 100);");
        html.AppendLine("        };");
        html.AppendLine("    </script>");
        html.AppendLine("</body>");
        html.AppendLine("</html>");
        return Content(html.ToString(), "text/html");
    }
    private string GetInvoiceHtml()
    {
        // Build HTML with proper structure
        return @"
        <html>
        <head>
            <style>
                body { font-family: Arial, sans-serif; }
                .header { font-weight: bold; color: #1e40af; border-bottom: 2px solid #3b82f6; padding-bottom: 5px; }
                .content { padding-top: 10px; }
            </style>
        </head>
        <body>
            <div class='header'>Invoice Summary (Client View)</div>
            <div class='content'>
                <p>Document content: This file is optimized for printing.</p>
                <p>Total Amount: <b>$999.00</b></p>
            </div>
        </body>
        </html>";
    }

public IActionResult GetRawPrintablePdf()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf(GetInvoiceHtml());
        // This header tells the browser to display the file inline.
        // We use IHeaderDictionary indexer to prevent ArgumentException.
        **HttpContext context**.Response.Headers["Content-Disposition"] = "inline; filename=invoice.pdf";
        return File(pdf.BinaryData, "application/pdf");
    }
    public IActionResult PrintUsingClientWrapper()
    {
        var printUrl = Url.Action(nameof(GetRawPrintablePdf));
        // Use a simple HTML/JavaScript wrapper to force the print dialog
        var html = new StringBuilder();
        html.AppendLine("<!DOCTYPE html>");
        html.AppendLine("<html lang=\"en\">");
        html.AppendLine("<head>");
        html.AppendLine("    <title>Print Document</title>");
        html.AppendLine("</head>");
        html.AppendLine("<body>");
        // Load the PDF from the 'GetRawPrintablePdf' action into an invisible iframe.
        html.AppendLine($"    <iframe src='{printUrl}' style='position:absolute; top:0; left:0; width:100%; height:100%; border:none;'></iframe>");
        html.AppendLine("    <script>");
        // Wait for the iframe (and thus the PDF) to load, then trigger the print dialog.
        html.AppendLine("        window.onload = function() {");
        html.AppendLine("            // Wait briefly to ensure the iframe content is rendered before printing.");
        html.AppendLine("            setTimeout(function() {");
        html.AppendLine("                window.print();");
        html.AppendLine("            }, 100);");
        html.AppendLine("        };");
        html.AppendLine("    </script>");
        html.AppendLine("</body>");
        html.AppendLine("</html>");
        return Content(html.ToString(), "text/html");
    }
    private string GetInvoiceHtml()
    {
        // Build HTML with proper structure
        return @"
        <html>
        <head>
            <style>
                body { font-family: Arial, sans-serif; }
                .header { font-weight: bold; color: #1e40af; border-bottom: 2px solid #3b82f6; padding-bottom: 5px; }
                .content { padding-top: 10px; }
            </style>
        </head>
        <body>
            <div class='header'>Invoice Summary (Client View)</div>
            <div class='content'>
                <p>Document content: This file is optimized for printing.</p>
                <p>Total Amount: <b>$999.00</b></p>
            </div>
        </body>
        </html>";
    }

PDF 文档在浏览器中打开，用户可以通过使用标准的浏览器打印对话框触发他们的默认打印机进行打印。这种方法优于直接发起服务器端打印请求。

输出

如何在ASP.NET中以编程方式打印PDF文件：图4 - 客户端打印对话框

处理各种源代码输入

IronPDF 灵活处理各种源代码输入，这对于希望创建动态打印代码的开发人员来说很重要。

public async Task<IActionResult> PrintFromMultipleSources()
{
    var renderer = new ChromePdfRenderer();
    // From URL
    var pdfFromUrl = await renderer.RenderUrlAsPdfAsync("https://example.com");
    // From HTML file path
    var pdfFromFile = renderer.RenderHtmlFileAsPdf(@"Templates\report.html");
    var pdfToStream = renderer.RenderHtmlAsPdf("<h2>PDF from Memory Stream</h2><p>This content was loaded into memory first.</p>");
// Now, write the valid PDF bytes to the stream
using (var stream = new MemoryStream(pdfToStream.BinaryData))
{
    var pdfFromStream = new PdfDocument(stream);
    // Example: Print the PDF loaded from the stream
    // pdfFromStream.Print(); 
}
pdfFromUrl.Print();
// Logging the various files handled
    var fileList = new List<string> { "URL", "File Path", "Memory Stream" };
return Ok("PDF documents processed and 'example.com' printed to default server printer.");
}

public async Task<IActionResult> PrintFromMultipleSources()
{
    var renderer = new ChromePdfRenderer();
    // From URL
    var pdfFromUrl = await renderer.RenderUrlAsPdfAsync("https://example.com");
    // From HTML file path
    var pdfFromFile = renderer.RenderHtmlFileAsPdf(@"Templates\report.html");
    var pdfToStream = renderer.RenderHtmlAsPdf("<h2>PDF from Memory Stream</h2><p>This content was loaded into memory first.</p>");
// Now, write the valid PDF bytes to the stream
using (var stream = new MemoryStream(pdfToStream.BinaryData))
{
    var pdfFromStream = new PdfDocument(stream);
    // Example: Print the PDF loaded from the stream
    // pdfFromStream.Print(); 
}
pdfFromUrl.Print();
// Logging the various files handled
    var fileList = new List<string> { "URL", "File Path", "Memory Stream" };
return Ok("PDF documents processed and 'example.com' printed to default server printer.");
}

Imports System.Threading.Tasks
Imports Microsoft.AspNetCore.Mvc
Imports System.IO

Public Class YourController
    Inherits Controller

    Public Async Function PrintFromMultipleSources() As Task(Of IActionResult)
        Dim renderer = New ChromePdfRenderer()
        ' From URL
        Dim pdfFromUrl = Await renderer.RenderUrlAsPdfAsync("https://example.com")
        ' From HTML file path
        Dim pdfFromFile = renderer.RenderHtmlFileAsPdf("Templates\report.html")
        Dim pdfToStream = renderer.RenderHtmlAsPdf("<h2>PDF from Memory Stream</h2><p>This content was loaded into memory first.</p>")
        ' Now, write the valid PDF bytes to the stream
        Using stream = New MemoryStream(pdfToStream.BinaryData)
            Dim pdfFromStream = New PdfDocument(stream)
            ' Example: Print the PDF loaded from the stream
            ' pdfFromStream.Print() 
        End Using
        pdfFromUrl.Print()
        ' Logging the various files handled
        Dim fileList = New List(Of String) From {"URL", "File Path", "Memory Stream"}
        Return Ok("PDF documents processed and 'example.com' printed to default server printer.")
    End Function
End Class

Imports System.Threading.Tasks
Imports Microsoft.AspNetCore.Mvc
Imports System.IO

Public Class YourController
    Inherits Controller

    Public Async Function PrintFromMultipleSources() As Task(Of IActionResult)
        Dim renderer = New ChromePdfRenderer()
        ' From URL
        Dim pdfFromUrl = Await renderer.RenderUrlAsPdfAsync("https://example.com")
        ' From HTML file path
        Dim pdfFromFile = renderer.RenderHtmlFileAsPdf("Templates\report.html")
        Dim pdfToStream = renderer.RenderHtmlAsPdf("<h2>PDF from Memory Stream</h2><p>This content was loaded into memory first.</p>")
        ' Now, write the valid PDF bytes to the stream
        Using stream = New MemoryStream(pdfToStream.BinaryData)
            Dim pdfFromStream = New PdfDocument(stream)
            ' Example: Print the PDF loaded from the stream
            ' pdfFromStream.Print() 
        End Using
        pdfFromUrl.Print()
        ' Logging the various files handled
        Dim fileList = New List(Of String) From {"URL", "File Path", "Memory Stream"}
        Return Ok("PDF documents processed and 'example.com' printed to default server printer.")
    End Function
End Class

以上几行展示了如何创建一个新的处理文件源列表。每个方法在维护打印质量的同时保留了文档结构和图形。

如何在ASP.NET中以编程方式打印PDF文件：图5

错误处理与日志记录

为生产环境实施强大的错误处理：

using System.Drawing.Printing; // For PrinterSettings
// ... other usings ...
public IActionResult SafePrint(string documentId)
{
    try
    {
        var pdf = LoadPdfDocument(documentId);
        // Verify printer availability
        if (!PrinterSettings.InstalledPrinters.Cast<string>()
            .Contains("Target Printer"))
        {
            // Log error and handle gracefully
            return BadRequest("Printer not available");
        }
        pdf.Print();
        // Log successful output
        return Ok($"Document {documentId} printed successfully");
    }
    catch (Exception ex)
    {
        // Log error details
        return StatusCode(500, "Printing failed");
    }
}

using System.Drawing.Printing; // For PrinterSettings
// ... other usings ...
public IActionResult SafePrint(string documentId)
{
    try
    {
        var pdf = LoadPdfDocument(documentId);
        // Verify printer availability
        if (!PrinterSettings.InstalledPrinters.Cast<string>()
            .Contains("Target Printer"))
        {
            // Log error and handle gracefully
            return BadRequest("Printer not available");
        }
        pdf.Print();
        // Log successful output
        return Ok($"Document {documentId} printed successfully");
    }
    catch (Exception ex)
    {
        // Log error details
        return StatusCode(500, "Printing failed");
    }
}

Imports System.Drawing.Printing ' For PrinterSettings
' ... other Imports ...
Public Function SafePrint(documentId As String) As IActionResult
    Try
        Dim pdf = LoadPdfDocument(documentId)
        ' Verify printer availability
        If Not PrinterSettings.InstalledPrinters.Cast(Of String)().Contains("Target Printer") Then
            ' Log error and handle gracefully
            Return BadRequest("Printer not available")
        End If
        pdf.Print()
        ' Log successful output
        Return Ok($"Document {documentId} printed successfully")
    Catch ex As Exception
        ' Log error details
        Return StatusCode(500, "Printing failed")
    End Try
End Function

Imports System.Drawing.Printing ' For PrinterSettings
' ... other Imports ...
Public Function SafePrint(documentId As String) As IActionResult
    Try
        Dim pdf = LoadPdfDocument(documentId)
        ' Verify printer availability
        If Not PrinterSettings.InstalledPrinters.Cast(Of String)().Contains("Target Printer") Then
            ' Log error and handle gracefully
            Return BadRequest("Printer not available")
        End If
        pdf.Print()
        ' Log successful output
        Return Ok($"Document {documentId} printed successfully")
    Catch ex As Exception
        ' Log error details
        Return StatusCode(500, "Printing failed")
    End Try
End Function

这可确保即使在系统资源不可用时也能可靠打印，并且是打印服务的重要组成部分。

输出场景

打印机不可用

如果代码中指定的打印机不可用，代码将提供此错误消息：

如何在ASP.NET中以编程方式打印PDF文件：图6 - 打印机不可用错误

PDF 成功打印

如果您的 PDF 打印成功，您将看到类似于以下的确认消息：

如何在ASP.NET中以编程方式打印PDF文件：图7 - PDF打印成功消息

高级配置

IronPDF 的文件夹结构支持复杂场景。您使用的 IronPDF 库版本可能会影响这些设置。

public IActionResult ConfigureAdvancedPrinting(object sender, EventArgs e)
{
    var renderer = new ChromePdfRenderer();
    // Configure rendering options
    renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
    renderer.RenderingOptions.EnableJavaScript = true;
    renderer.RenderingOptions.RenderDelay = 500; // Wait for dynamic content
    // Generate complex PDF documents
    var pdf = renderer.RenderHtmlAsPdf(GetDynamicContent());
    // Apply security settings
    pdf.SecuritySettings.AllowUserPrinting = true;
    pdf.MetaData.Author = "Your Company";
    return File(pdf.BinaryData, "application/pdf");
}

public IActionResult ConfigureAdvancedPrinting(object sender, EventArgs e)
{
    var renderer = new ChromePdfRenderer();
    // Configure rendering options
    renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
    renderer.RenderingOptions.EnableJavaScript = true;
    renderer.RenderingOptions.RenderDelay = 500; // Wait for dynamic content
    // Generate complex PDF documents
    var pdf = renderer.RenderHtmlAsPdf(GetDynamicContent());
    // Apply security settings
    pdf.SecuritySettings.AllowUserPrinting = true;
    pdf.MetaData.Author = "Your Company";
    return File(pdf.BinaryData, "application/pdf");
}

Public Function ConfigureAdvancedPrinting(sender As Object, e As EventArgs) As IActionResult
    Dim renderer = New ChromePdfRenderer()
    ' Configure rendering options
    renderer.RenderingOptions.PaperSize = PdfPaperSize.A4
    renderer.RenderingOptions.EnableJavaScript = True
    renderer.RenderingOptions.RenderDelay = 500 ' Wait for dynamic content
    ' Generate complex PDF documents
    Dim pdf = renderer.RenderHtmlAsPdf(GetDynamicContent())
    ' Apply security settings
    pdf.SecuritySettings.AllowUserPrinting = True
    pdf.MetaData.Author = "Your Company"
    Return File(pdf.BinaryData, "application/pdf")
End Function

Public Function ConfigureAdvancedPrinting(sender As Object, e As EventArgs) As IActionResult
    Dim renderer = New ChromePdfRenderer()
    ' Configure rendering options
    renderer.RenderingOptions.PaperSize = PdfPaperSize.A4
    renderer.RenderingOptions.EnableJavaScript = True
    renderer.RenderingOptions.RenderDelay = 500 ' Wait for dynamic content
    ' Generate complex PDF documents
    Dim pdf = renderer.RenderHtmlAsPdf(GetDynamicContent())
    ' Apply security settings
    pdf.SecuritySettings.AllowUserPrinting = True
    pdf.MetaData.Author = "Your Company"
    Return File(pdf.BinaryData, "application/pdf")
End Function

命令简单地是 pdf.Print()，一旦文档生成。