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遷移指南

如何在 C# 中從 Apryse PDF 遷移到 IronPDF

Curtis Chau
Curtis Chau
更新:

Full Comparison

Looking for a detailed feature-by-feature breakdown? See how IronPDF stacks up against Apryse PDF on pricing, HTML support, and licensing.

View Full Comparison

Apryse PDF（前身為 PDFTron）是優質的企業級 PDF SDK，以其全面的文件處理功能而聞名。 然而，其高昂的定價模式（每位開發人員每年超過 1,500 美元）、複雜的整合需求以及 C++ 傳統，對於尋求直接 PDF 功能的開發團隊造成障礙。 本綜合指南提供了從Apryse PDF到IronPDF的逐步遷移路徑 -IronPDFfor .NET 是一個原生的 .NET PDF 函式庫，具有現代的 C# 慣例、更簡單的整合以及一次性永久授權。

為何要遷離 Apryse PDF？

雖然Apryse PDF提供強大的功能，但仍有幾個因素驅使開發團隊尋求替代方案來滿足他們的 PDF 生成需求。

尊榮定價及訂閱模式

Apryse PDF 以企業客戶為目標，其定價對於中小型專案而言可能過高：

範疇 Apryse PDF (PDFTron) IronPDF
起價 1,500+美元/開發人員/年（已報告） 一次性 749 美元 (Lite)
授權模式 年度訂閱 永久授權
閱讀器授權 獨立、額外費用 不適用（使用標準檢視器）
伺服器授權條款 需要企業定價 包含在授權層級中
三年總成本 每位開發人員 4,500 美元以上 一次性 749 美元

整合的複雜性

Apryse PDF 的 C++ 傳統帶來了影響開發速度的複雜性：

特點 Apryse PDF IronPDF
設定 模組路徑、外部二進位檔 單一 NuGet 套件
初始化 PDFNet.Initialize() 附許可證 簡單的屬性指派
HTML 渲染 需要外部 html2pdf 模組 內建 Chromium 引擎
API 風格 C++ 傳承、複雜 現代 C# 慣例
依賴性 多個 DLL、特定平台 自成一格的套件

何時考慮遷移

如果：迁移到 IronPDF

  • 您主要需要將 HTML/URL 轉換為 PDF
  • 您想要更簡單的 API 與更少的模板
  • 對於您的使用個案而言，高價並不合理
  • 您不需要 PDFViewCtrl 檢視器控制項
  • 您偏好一次性授權而非訂閱

如果：繼續使用 Apryse PDF

  • 您需要他們的原生檢視器控制項 (PDFViewCtrl)
  • 您廣泛使用 XOD 或專屬格式
  • 您需要特定的企業功能（進階編輯等）
  • 您的組織已經擁有企業授權

遷移前的準備工作

先決條件

確保您的環境符合這些要求：

  • .NET Framework 4.6.2+ 或 .NET Core 3.1 / .NET 5-9
  • Visual Studio 2019+ 或具有 C# 擴充功能的 VS Code
  • NuGet 套件管理員存取權限 -IronPDF授權金鑰 (可於 ironpdf.com 網站免費試用)

審核Apryse PDF使用情況

在您的解決方案目錄中執行這些指令，以辨識所有 Apryse 參考資料：

# Find all pdftron using statements
grep -r "using pdftron" --include="*.cs" .

# Find PDFNet initialization
grep -r "PDFNet.Initialize\|PDFNet.SetResourcesPath" --include="*.cs" .

# Find PDFDoc usage
grep -r "new PDFDoc\|PDFDoc\." --include="*.cs" .

# Find HTML2PDF usage
grep -r "HTML2PDF\|InsertFromURL\|InsertFromHtmlString" --include="*.cs" .

# Find ElementReader/Writer usage
grep -r "ElementReader\|ElementWriter\|ElementBuilder" --include="*.cs" .
# Find all pdftron using statements
grep -r "using pdftron" --include="*.cs" .

# Find PDFNet initialization
grep -r "PDFNet.Initialize\|PDFNet.SetResourcesPath" --include="*.cs" .

# Find PDFDoc usage
grep -r "new PDFDoc\|PDFDoc\." --include="*.cs" .

# Find HTML2PDF usage
grep -r "HTML2PDF\|InsertFromURL\|InsertFromHtmlString" --include="*.cs" .

# Find ElementReader/Writer usage
grep -r "ElementReader\|ElementWriter\|ElementBuilder" --include="*.cs" .
SHELL

可預期的重大變更

Apryse PDF 模式 變更要求
PDFNet.Initialize() 替換為 IronPdf.License.LicenseKey
HTML2PDF 模組 內建 ChromePdfRenderer
ElementReader/ElementWriter IronPDF 內部處理內容
SDFDoc.SaveOptions 簡單 SaveAs() 方法
PDFViewCtrl 使用外部 PDF 檢視器
XOD 格式 轉換為 PDF 或影像
模組路徑配置 不需要

逐步遷移的過程

步驟 1：更新 NuGet 套件

移除 Apryse/PDFTron 套件並安裝 IronPDF：

# Remove Apryse/PDFTron packages
dotnet remove package PDFTron.NET.x64
dotnet remove package PDFTron.NET.x86
dotnet remove package pdftron

# Install IronPDF
dotnet add package IronPdf
# Remove Apryse/PDFTron packages
dotnet remove package PDFTron.NET.x64
dotnet remove package PDFTron.NET.x86
dotnet remove package pdftron

# Install IronPDF
dotnet add package IronPdf
SHELL

或透過套件管理員控制台：

Uninstall-Package PDFTron.NET.x64
Install-Package IronPdf

步驟 2：更新命名空間參考資料

用IronPDF取代 Apryse 命名空間：

// Remove these
using pdftron;
using pdftron.PDF;
using pdftron.PDF.Convert;
using pdftron.SDF;
using pdftron.Filters;

// Add these
using IronPdf;
using IronPdf.Rendering;
// Remove these
using pdftron;
using pdftron.PDF;
using pdftron.PDF.Convert;
using pdftron.SDF;
using pdftron.Filters;

// Add these
using IronPdf;
using IronPdf.Rendering;
Imports IronPdf
Imports IronPdf.Rendering
$vbLabelText   $csharpLabel

步驟 3：移除初始化模板

Apryse PDF 需要複雜的初始化。IronPDF完全解決了這個問題。

Apryse PDF 實作：

// Complex initialization
PDFNet.Initialize("YOUR_LICENSE_KEY");
PDFNet.SetResourcesPath("path/to/resources");
// Plus module path for HTML2PDF...
// Complex initialization
PDFNet.Initialize("YOUR_LICENSE_KEY");
PDFNet.SetResourcesPath("path/to/resources");
// Plus module path for HTML2PDF...
' Complex initialization
PDFNet.Initialize("YOUR_LICENSE_KEY")
PDFNet.SetResourcesPath("path/to/resources")
' Plus module path for HTML2PDF...
$vbLabelText   $csharpLabel

IronPDF 實作：

// Simple license assignment (optional for development)
IronPdf.License.LicenseKey = "YOUR_LICENSE_KEY";
// Simple license assignment (optional for development)
IronPdf.License.LicenseKey = "YOUR_LICENSE_KEY";
' Simple license assignment (optional for development)
IronPdf.License.LicenseKey = "YOUR_LICENSE_KEY"
$vbLabelText   $csharpLabel

使用IronPDF不需要 PDFNet.Terminate() 呼叫－資源會自動管理。

完整的 API 遷移參考。

核心類映射

Apryse PDF 類別 IronPDF 同等級產品
PDFDoc PdfDocument
HTML2PDF ChromePdfRenderer
TextExtractor PdfDocument.ExtractAllText()
Stamper PdfDocument.ApplyWatermark()
PDFDraw PdfDocument.ToBitmap()
SecurityHandler PdfDocument.SecuritySettings
PDFNet IronPdf.License

文件操作

Apryse PDF 方法 IronPDF 方法
new PDFDoc() new PdfDocument()
new PDFDoc(path) PdfDocument.FromFile(path)
new PDFDoc(buffer) PdfDocument.FromBinaryData(bytes)
doc.Save(path, options) pdf.SaveAs(path)
doc.Save(buffer) pdf.BinaryData
doc.Close() pdf.Dispose()
doc.GetPageCount() pdf.PageCount
doc.AppendPages(doc2, start, end) PdfDocument.Merge(pdfs)

HTML 至 PDF 轉換

Apryse PDF 方法 IronPDF 方法
HTML2PDF.Convert(doc) renderer.RenderHtmlAsPdf(html)
converter.InsertFromURL(url) renderer.RenderUrlAsPdf(url)
converter.InsertFromHtmlString(html) renderer.RenderHtmlAsPdf(html)
converter.SetModulePath(path) 不需要
converter.SetPaperSize(width, height) RenderingOptions.PaperSize
converter.SetLandscape(true) RenderingOptions.PaperOrientation

程式碼遷移範例

轉換為 PDF 的 HTML 字串

最常見的操作示範是大幅減少模板程式碼。

Apryse PDF 實作：

using pdftron;
using pdftron.PDF;

class Program
{
    static void Main()
    {
        PDFNet.Initialize("YOUR_LICENSE_KEY");
        PDFNet.SetResourcesPath("path/to/resources");

        string html = "<html><body><h1>Hello World</h1><p>Content here</p></body></html>";

        using (PDFDoc doc = new PDFDoc())
        {
            HTML2PDF converter = new HTML2PDF();
            converter.SetModulePath("path/to/html2pdf");
            converter.InsertFromHtmlString(html);

            HTML2PDF.WebPageSettings settings = new HTML2PDF.WebPageSettings();
            settings.SetPrintBackground(true);
            settings.SetLoadImages(true);

            if (converter.Convert(doc))
            {
                doc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized);
                Console.WriteLine("PDF created successfully");
            }
            else
            {
                Console.WriteLine($"Conversion failed: {converter.GetLog()}");
            }
        }

        PDFNet.Terminate();
    }
}
using pdftron;
using pdftron.PDF;

class Program
{
    static void Main()
    {
        PDFNet.Initialize("YOUR_LICENSE_KEY");
        PDFNet.SetResourcesPath("path/to/resources");

        string html = "<html><body><h1>Hello World</h1><p>Content here</p></body></html>";

        using (PDFDoc doc = new PDFDoc())
        {
            HTML2PDF converter = new HTML2PDF();
            converter.SetModulePath("path/to/html2pdf");
            converter.InsertFromHtmlString(html);

            HTML2PDF.WebPageSettings settings = new HTML2PDF.WebPageSettings();
            settings.SetPrintBackground(true);
            settings.SetLoadImages(true);

            if (converter.Convert(doc))
            {
                doc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized);
                Console.WriteLine("PDF created successfully");
            }
            else
            {
                Console.WriteLine($"Conversion failed: {converter.GetLog()}");
            }
        }

        PDFNet.Terminate();
    }
}
Imports pdftron
Imports pdftron.PDF

Class Program
    Shared Sub Main()
        PDFNet.Initialize("YOUR_LICENSE_KEY")
        PDFNet.SetResourcesPath("path/to/resources")

        Dim html As String = "<html><body><h1>Hello World</h1><p>Content here</p></body></html>"

        Using doc As New PDFDoc()
            Dim converter As New HTML2PDF()
            converter.SetModulePath("path/to/html2pdf")
            converter.InsertFromHtmlString(html)

            Dim settings As New HTML2PDF.WebPageSettings()
            settings.SetPrintBackground(True)
            settings.SetLoadImages(True)

            If converter.Convert(doc) Then
                doc.Save("output.pdf", SDFDoc.SaveOptions.e_linearized)
                Console.WriteLine("PDF created successfully")
            Else
                Console.WriteLine($"Conversion failed: {converter.GetLog()}")
            End If
        End Using

        PDFNet.Terminate()
    End Sub
End Class
$vbLabelText   $csharpLabel

IronPDF 實作：

// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();

        string html = "<html><body><h1>Hello World</h1></body></html>";
        var pdf = renderer.RenderHtmlAsPdf(html);

        pdf.SaveAs("output.pdf");
    }
}
// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();

        string html = "<html><body><h1>Hello World</h1></body></html>";
        var pdf = renderer.RenderHtmlAsPdf(html);

        pdf.SaveAs("output.pdf");
    }
}
Imports IronPdf

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()

        Dim html As String = "<html><body><h1>Hello World</h1></body></html>"
        Dim pdf = renderer.RenderHtmlAsPdf(html)

        pdf.SaveAs("output.pdf")
    End Sub
End Class
$vbLabelText   $csharpLabel

IronPDF 消除了初始化、模組路徑和清理代碼，將 35 行以上的代碼減少到 5 行。

URL 轉 PDF

Apryse PDF 實作：

using pdftron;
using pdftron.PDF;

PDFNet.Initialize("YOUR_LICENSE_KEY");

using (PDFDoc doc = new PDFDoc())
{
    HTML2PDF converter = new HTML2PDF();
    converter.SetModulePath("path/to/html2pdf");

    HTML2PDF.WebPageSettings settings = new HTML2PDF.WebPageSettings();
    settings.SetLoadImages(true);
    settings.SetAllowJavaScript(true);
    settings.SetPrintBackground(true);

    converter.InsertFromURL("https://example.com", settings);

    if (converter.Convert(doc))
    {
        doc.Save("webpage.pdf", SDFDoc.SaveOptions.e_linearized);
    }
}

PDFNet.Terminate();
using pdftron;
using pdftron.PDF;

PDFNet.Initialize("YOUR_LICENSE_KEY");

using (PDFDoc doc = new PDFDoc())
{
    HTML2PDF converter = new HTML2PDF();
    converter.SetModulePath("path/to/html2pdf");

    HTML2PDF.WebPageSettings settings = new HTML2PDF.WebPageSettings();
    settings.SetLoadImages(true);
    settings.SetAllowJavaScript(true);
    settings.SetPrintBackground(true);

    converter.InsertFromURL("https://example.com", settings);

    if (converter.Convert(doc))
    {
        doc.Save("webpage.pdf", SDFDoc.SaveOptions.e_linearized);
    }
}

PDFNet.Terminate();
Imports pdftron
Imports pdftron.PDF

PDFNet.Initialize("YOUR_LICENSE_KEY")

Using doc As New PDFDoc()
    Dim converter As New HTML2PDF()
    converter.SetModulePath("path/to/html2pdf")

    Dim settings As New HTML2PDF.WebPageSettings()
    settings.SetLoadImages(True)
    settings.SetAllowJavaScript(True)
    settings.SetPrintBackground(True)

    converter.InsertFromURL("https://example.com", settings)

    If converter.Convert(doc) Then
        doc.Save("webpage.pdf", SDFDoc.SaveOptions.e_linearized)
    End If
End Using

PDFNet.Terminate()
$vbLabelText   $csharpLabel

IronPDF 實作：

// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();

        string url = "https://www.example.com";
        var pdf = renderer.RenderUrlAsPdf(url);

        pdf.SaveAs("webpage.pdf");
    }
}
// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();

        string url = "https://www.example.com";
        var pdf = renderer.RenderUrlAsPdf(url);

        pdf.SaveAs("webpage.pdf");
    }
}
Imports IronPdf

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()

        Dim url As String = "https://www.example.com"
        Dim pdf = renderer.RenderUrlAsPdf(url)

        pdf.SaveAs("webpage.pdf")
    End Sub
End Class
$vbLabelText   $csharpLabel

合併多個 PDF 文件

Apryse PDF 實作：

using pdftron;
using pdftron.PDF;

PDFNet.Initialize("YOUR_LICENSE_KEY");

using (PDFDoc mainDoc = new PDFDoc())
{
    string[] files = { "doc1.pdf", "doc2.pdf", "doc3.pdf" };

    foreach (string file in files)
    {
        using (PDFDoc doc = new PDFDoc(file))
        {
            mainDoc.AppendPages(doc, 1, doc.GetPageCount());
        }
    }

    mainDoc.Save("merged.pdf", SDFDoc.SaveOptions.e_linearized);
}

PDFNet.Terminate();
using pdftron;
using pdftron.PDF;

PDFNet.Initialize("YOUR_LICENSE_KEY");

using (PDFDoc mainDoc = new PDFDoc())
{
    string[] files = { "doc1.pdf", "doc2.pdf", "doc3.pdf" };

    foreach (string file in files)
    {
        using (PDFDoc doc = new PDFDoc(file))
        {
            mainDoc.AppendPages(doc, 1, doc.GetPageCount());
        }
    }

    mainDoc.Save("merged.pdf", SDFDoc.SaveOptions.e_linearized);
}

PDFNet.Terminate();
Imports pdftron
Imports pdftron.PDF

PDFNet.Initialize("YOUR_LICENSE_KEY")

Using mainDoc As New PDFDoc()
    Dim files As String() = {"doc1.pdf", "doc2.pdf", "doc3.pdf"}

    For Each file As String In files
        Using doc As New PDFDoc(file)
            mainDoc.AppendPages(doc, 1, doc.GetPageCount())
        End Using
    Next

    mainDoc.Save("merged.pdf", SDFDoc.SaveOptions.e_linearized)
End Using

PDFNet.Terminate()
$vbLabelText   $csharpLabel

IronPDF 實作：

// NuGet: Install-Package IronPdf
using IronPdf;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        var pdf1 = PdfDocument.FromFile("document1.pdf");
        var pdf2 = PdfDocument.FromFile("document2.pdf");

        var merged = PdfDocument.Merge(new List<PdfDocument> { pdf1, pdf2 });

        merged.SaveAs("merged.pdf");
    }
}
// NuGet: Install-Package IronPdf
using IronPdf;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        var pdf1 = PdfDocument.FromFile("document1.pdf");
        var pdf2 = PdfDocument.FromFile("document2.pdf");

        var merged = PdfDocument.Merge(new List<PdfDocument> { pdf1, pdf2 });

        merged.SaveAs("merged.pdf");
    }
}
Imports IronPdf
Imports System.Collections.Generic

Class Program
    Shared Sub Main()
        Dim pdf1 = PdfDocument.FromFile("document1.pdf")
        Dim pdf2 = PdfDocument.FromFile("document2.pdf")

        Dim merged = PdfDocument.Merge(New List(Of PdfDocument) From {pdf1, pdf2})

        merged.SaveAs("merged.pdf")
    End Sub
End Class
$vbLabelText   $csharpLabel

IronPDF 的靜態 Merge 方法直接接受多個文檔，消除了頁面迭代模式。

文字萃取

Apryse PDF 實作：

using pdftron;
using pdftron.PDF;

PDFNet.Initialize("YOUR_LICENSE_KEY");

using (PDFDoc doc = new PDFDoc("document.pdf"))
{
    TextExtractor extractor = new TextExtractor();

    for (int i = 1; i <= doc.GetPageCount(); i++)
    {
        Page page = doc.GetPage(i);
        extractor.Begin(page);

        string pageText = extractor.GetAsText();
        Console.WriteLine($"Page {i}:");
        Console.WriteLine(pageText);
    }
}

PDFNet.Terminate();
using pdftron;
using pdftron.PDF;

PDFNet.Initialize("YOUR_LICENSE_KEY");

using (PDFDoc doc = new PDFDoc("document.pdf"))
{
    TextExtractor extractor = new TextExtractor();

    for (int i = 1; i <= doc.GetPageCount(); i++)
    {
        Page page = doc.GetPage(i);
        extractor.Begin(page);

        string pageText = extractor.GetAsText();
        Console.WriteLine($"Page {i}:");
        Console.WriteLine(pageText);
    }
}

PDFNet.Terminate();
Imports pdftron
Imports pdftron.PDF

PDFNet.Initialize("YOUR_LICENSE_KEY")

Using doc As New PDFDoc("document.pdf")
    Dim extractor As New TextExtractor()

    For i As Integer = 1 To doc.GetPageCount()
        Dim page As Page = doc.GetPage(i)
        extractor.Begin(page)

        Dim pageText As String = extractor.GetAsText()
        Console.WriteLine($"Page {i}:")
        Console.WriteLine(pageText)
    Next
End Using

PDFNet.Terminate()
$vbLabelText   $csharpLabel

IronPDF 實作：

using IronPdf;

var pdf = PdfDocument.FromFile("document.pdf");

// Extract all text at once
string allText = pdf.ExtractAllText();
Console.WriteLine(allText);

// Extract from specific page
string page1Text = pdf.ExtractTextFromPage(0); // 0-indexed
Console.WriteLine($"Page 1: {page1Text}");
using IronPdf;

var pdf = PdfDocument.FromFile("document.pdf");

// Extract all text at once
string allText = pdf.ExtractAllText();
Console.WriteLine(allText);

// Extract from specific page
string page1Text = pdf.ExtractTextFromPage(0); // 0-indexed
Console.WriteLine($"Page 1: {page1Text}");
Imports IronPdf

Dim pdf = PdfDocument.FromFile("document.pdf")

' Extract all text at once
Dim allText As String = pdf.ExtractAllText()
Console.WriteLine(allText)

' Extract from specific page
Dim page1Text As String = pdf.ExtractTextFromPage(0) ' 0-indexed
Console.WriteLine($"Page 1: {page1Text}")
$vbLabelText   $csharpLabel

新增水印

Apryse PDF 實作：

using pdftron;
using pdftron.PDF;

PDFNet.Initialize("YOUR_LICENSE_KEY");

using (PDFDoc doc = new PDFDoc("document.pdf"))
{
    Stamper stamper = new Stamper(Stamper.SizeType.e_relative_scale, 0.5, 0.5);
    stamper.SetAlignment(Stamper.HorizontalAlignment.e_horizontal_center,
                         Stamper.VerticalAlignment.e_vertical_center);
    stamper.SetOpacity(0.3);
    stamper.SetRotation(45);
    stamper.SetFontColor(new ColorPt(1, 0, 0));
    stamper.SetTextAlignment(Stamper.TextAlignment.e_align_center);

    stamper.StampText(doc, "CONFIDENTIAL",
        new PageSet(1, doc.GetPageCount()));

    doc.Save("watermarked.pdf", SDFDoc.SaveOptions.e_linearized);
}

PDFNet.Terminate();
using pdftron;
using pdftron.PDF;

PDFNet.Initialize("YOUR_LICENSE_KEY");

using (PDFDoc doc = new PDFDoc("document.pdf"))
{
    Stamper stamper = new Stamper(Stamper.SizeType.e_relative_scale, 0.5, 0.5);
    stamper.SetAlignment(Stamper.HorizontalAlignment.e_horizontal_center,
                         Stamper.VerticalAlignment.e_vertical_center);
    stamper.SetOpacity(0.3);
    stamper.SetRotation(45);
    stamper.SetFontColor(new ColorPt(1, 0, 0));
    stamper.SetTextAlignment(Stamper.TextAlignment.e_align_center);

    stamper.StampText(doc, "CONFIDENTIAL",
        new PageSet(1, doc.GetPageCount()));

    doc.Save("watermarked.pdf", SDFDoc.SaveOptions.e_linearized);
}

PDFNet.Terminate();
Imports pdftron
Imports pdftron.PDF

PDFNet.Initialize("YOUR_LICENSE_KEY")

Using doc As New PDFDoc("document.pdf")
    Dim stamper As New Stamper(Stamper.SizeType.e_relative_scale, 0.5, 0.5)
    stamper.SetAlignment(Stamper.HorizontalAlignment.e_horizontal_center, Stamper.VerticalAlignment.e_vertical_center)
    stamper.SetOpacity(0.3)
    stamper.SetRotation(45)
    stamper.SetFontColor(New ColorPt(1, 0, 0))
    stamper.SetTextAlignment(Stamper.TextAlignment.e_align_center)

    stamper.StampText(doc, "CONFIDENTIAL", New PageSet(1, doc.GetPageCount()))

    doc.Save("watermarked.pdf", SDFDoc.SaveOptions.e_linearized)
End Using

PDFNet.Terminate()
$vbLabelText   $csharpLabel

IronPDF 實作：

using IronPdf;
using IronPdf.Editing;

var pdf = PdfDocument.FromFile("document.pdf");

// HTML-based watermark with full styling control
string watermarkHtml = @"
<div style='
    color: red;
    opacity: 0.3;
    font-size: 72px;
    font-weight: bold;
    text-align: center;
'>CONFIDENTIAL</div>";

pdf.ApplyWatermark(watermarkHtml,
    rotation: 45,
    verticalAlignment: VerticalAlignment.Middle,
    horizontalAlignment: HorizontalAlignment.Center);

pdf.SaveAs("watermarked.pdf");
using IronPdf;
using IronPdf.Editing;

var pdf = PdfDocument.FromFile("document.pdf");

// HTML-based watermark with full styling control
string watermarkHtml = @"
<div style='
    color: red;
    opacity: 0.3;
    font-size: 72px;
    font-weight: bold;
    text-align: center;
'>CONFIDENTIAL</div>";

pdf.ApplyWatermark(watermarkHtml,
    rotation: 45,
    verticalAlignment: VerticalAlignment.Middle,
    horizontalAlignment: HorizontalAlignment.Center);

pdf.SaveAs("watermarked.pdf");
Imports IronPdf
Imports IronPdf.Editing

Dim pdf = PdfDocument.FromFile("document.pdf")

' HTML-based watermark with full styling control
Dim watermarkHtml As String = "
<div style='
    color: red;
    opacity: 0.3;
    font-size: 72px;
    font-weight: bold;
    text-align: center;
'>CONFIDENTIAL</div>"

pdf.ApplyWatermark(watermarkHtml,
    rotation:=45,
    verticalAlignment:=VerticalAlignment.Middle,
    horizontalAlignment:=HorizontalAlignment.Center)

pdf.SaveAs("watermarked.pdf")
$vbLabelText   $csharpLabel

IronPDF 使用基於 HTML/CSS 的浮水印技術，透過熟悉的 Web 技術提供完整的樣式控制。

密碼保護

Apryse PDF 實作：

using pdftron;
using pdftron.PDF;
using pdftron.SDF;

PDFNet.Initialize("YOUR_LICENSE_KEY");

using (PDFDoc doc = new PDFDoc("document.pdf"))
{
    SecurityHandler handler = new SecurityHandler();
    handler.ChangeUserPassword("user123");
    handler.ChangeMasterPassword("owner456");

    handler.SetPermission(SecurityHandler.Permission.e_print, false);
    handler.SetPermission(SecurityHandler.Permission.e_extract_content, false);

    doc.SetSecurityHandler(handler);
    doc.Save("protected.pdf", SDFDoc.SaveOptions.e_linearized);
}

PDFNet.Terminate();
using pdftron;
using pdftron.PDF;
using pdftron.SDF;

PDFNet.Initialize("YOUR_LICENSE_KEY");

using (PDFDoc doc = new PDFDoc("document.pdf"))
{
    SecurityHandler handler = new SecurityHandler();
    handler.ChangeUserPassword("user123");
    handler.ChangeMasterPassword("owner456");

    handler.SetPermission(SecurityHandler.Permission.e_print, false);
    handler.SetPermission(SecurityHandler.Permission.e_extract_content, false);

    doc.SetSecurityHandler(handler);
    doc.Save("protected.pdf", SDFDoc.SaveOptions.e_linearized);
}

PDFNet.Terminate();
Imports pdftron
Imports pdftron.PDF
Imports pdftron.SDF

PDFNet.Initialize("YOUR_LICENSE_KEY")

Using doc As New PDFDoc("document.pdf")
    Dim handler As New SecurityHandler()
    handler.ChangeUserPassword("user123")
    handler.ChangeMasterPassword("owner456")

    handler.SetPermission(SecurityHandler.Permission.e_print, False)
    handler.SetPermission(SecurityHandler.Permission.e_extract_content, False)

    doc.SetSecurityHandler(handler)
    doc.Save("protected.pdf", SDFDoc.SaveOptions.e_linearized)
End Using

PDFNet.Terminate()
$vbLabelText   $csharpLabel

IronPDF 實作：

using IronPdf;

var pdf = PdfDocument.FromFile("document.pdf");

// Set passwords
pdf.SecuritySettings.UserPassword = "user123";
pdf.SecuritySettings.OwnerPassword = "owner456";

// Set permissions
pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.NoPrint;
pdf.SecuritySettings.AllowUserCopyPasteContent = false;
pdf.SecuritySettings.AllowUserEdits = PdfEditSecurity.NoEdit;

pdf.SaveAs("protected.pdf");
using IronPdf;

var pdf = PdfDocument.FromFile("document.pdf");

// Set passwords
pdf.SecuritySettings.UserPassword = "user123";
pdf.SecuritySettings.OwnerPassword = "owner456";

// Set permissions
pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.NoPrint;
pdf.SecuritySettings.AllowUserCopyPasteContent = false;
pdf.SecuritySettings.AllowUserEdits = PdfEditSecurity.NoEdit;

pdf.SaveAs("protected.pdf");
Imports IronPdf

Dim pdf = PdfDocument.FromFile("document.pdf")

' Set passwords
pdf.SecuritySettings.UserPassword = "user123"
pdf.SecuritySettings.OwnerPassword = "owner456"

' Set permissions
pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.NoPrint
pdf.SecuritySettings.AllowUserCopyPasteContent = False
pdf.SecuritySettings.AllowUserEdits = PdfEditSecurity.NoEdit

pdf.SaveAs("protected.pdf")
$vbLabelText   $csharpLabel

頁首和頁尾

IronPDF 實作：

using IronPdf;

var renderer = new ChromePdfRenderer();

renderer.RenderingOptions.HtmlHeader = new HtmlHeaderFooter
{
    HtmlFragment = "<div style='text-align:center; font-size:12px;'>Company Header</div>",
    DrawDividerLine = true,
    MaxHeight = 30
};

renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter
{
    HtmlFragment = "<div style='text-align:center; font-size:10px;'>Page {page} of {total-pages}</div>",
    DrawDividerLine = true,
    MaxHeight = 25
};

var pdf = renderer.RenderHtmlAsPdf("<h1>Content</h1>");
pdf.SaveAs("with_headers.pdf");
using IronPdf;

var renderer = new ChromePdfRenderer();

renderer.RenderingOptions.HtmlHeader = new HtmlHeaderFooter
{
    HtmlFragment = "<div style='text-align:center; font-size:12px;'>Company Header</div>",
    DrawDividerLine = true,
    MaxHeight = 30
};

renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter
{
    HtmlFragment = "<div style='text-align:center; font-size:10px;'>Page {page} of {total-pages}</div>",
    DrawDividerLine = true,
    MaxHeight = 25
};

var pdf = renderer.RenderHtmlAsPdf("<h1>Content</h1>");
pdf.SaveAs("with_headers.pdf");
Imports IronPdf

Dim renderer As New ChromePdfRenderer()

renderer.RenderingOptions.HtmlHeader = New HtmlHeaderFooter With {
    .HtmlFragment = "<div style='text-align:center; font-size:12px;'>Company Header</div>",
    .DrawDividerLine = True,
    .MaxHeight = 30
}

renderer.RenderingOptions.HtmlFooter = New HtmlHeaderFooter With {
    .HtmlFragment = "<div style='text-align:center; font-size:10px;'>Page {page} of {total-pages}</div>",
    .DrawDividerLine = True,
    .MaxHeight = 25
}

Dim pdf = renderer.RenderHtmlAsPdf("<h1>Content</h1>")
pdf.SaveAs("with_headers.pdf")
$vbLabelText   $csharpLabel

IronPDF 支援像 {page} 和 {total-pages} 這樣的佔位標記，用於動態頁碼。 如需更多選項，請參閱 headers and footers 文件。

ASP.NET Core 整合。

Apryse PDF 的初始化要求使網路應用程式整合變得複雜。IronPDF簡化了這種模式。

IronPDF模式：

[ApiController]
[Route("[controller]")]
public class PdfController : ControllerBase
{
    [HttpGet("generate")]
    public IActionResult GeneratePdf()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf("<h1>Report</h1>");

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

    [HttpGet("generate-async")]
    public async Task<IActionResult> GeneratePdfAsync()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = await renderer.RenderHtmlAsPdfAsync("<h1>Report</h1>");

        return File(pdf.Stream, "application/pdf", "report.pdf");
    }
}
[ApiController]
[Route("[controller]")]
public class PdfController : ControllerBase
{
    [HttpGet("generate")]
    public IActionResult GeneratePdf()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf("<h1>Report</h1>");

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

    [HttpGet("generate-async")]
    public async Task<IActionResult> GeneratePdfAsync()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = await renderer.RenderHtmlAsPdfAsync("<h1>Report</h1>");

        return File(pdf.Stream, "application/pdf", "report.pdf");
    }
}
Imports Microsoft.AspNetCore.Mvc

<ApiController>
<Route("[controller]")>
Public Class PdfController
    Inherits ControllerBase

    <HttpGet("generate")>
    Public Function GeneratePdf() As IActionResult
        Dim renderer = New ChromePdfRenderer()
        Dim pdf = renderer.RenderHtmlAsPdf("<h1>Report</h1>")

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

    <HttpGet("generate-async")>
    Public Async Function GeneratePdfAsync() As Task(Of IActionResult)
        Dim renderer = New ChromePdfRenderer()
        Dim pdf = Await renderer.RenderHtmlAsPdfAsync("<h1>Report</h1>")

        Return File(pdf.Stream, "application/pdf", "report.pdf")
    End Function
End Class
$vbLabelText   $csharpLabel

依賴注入配置

// Program.cs
public void ConfigureServices(IServiceCollection services)
{
    // Set license once
    IronPdf.License.LicenseKey = Configuration["IronPdf:LicenseKey"];

    // Register renderer as scoped service
    services.AddScoped<ChromePdfRenderer>();

    // Or create a wrapper service
    services.AddScoped<IPdfService, IronPdfService>();
}

// IronPdfService.cs
public class IronPdfService : IPdfService
{
    private readonly ChromePdfRenderer _renderer;

    public IronPdfService()
    {
        _renderer = new ChromePdfRenderer();
        _renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
        _renderer.RenderingOptions.PrintHtmlBackgrounds = true;
    }

    public PdfDocument GenerateFromHtml(string html) =>
        _renderer.RenderHtmlAsPdf(html);

    public Task<PdfDocument> GenerateFromHtmlAsync(string html) =>
        _renderer.RenderHtmlAsPdfAsync(html);
}
// Program.cs
public void ConfigureServices(IServiceCollection services)
{
    // Set license once
    IronPdf.License.LicenseKey = Configuration["IronPdf:LicenseKey"];

    // Register renderer as scoped service
    services.AddScoped<ChromePdfRenderer>();

    // Or create a wrapper service
    services.AddScoped<IPdfService, IronPdfService>();
}

// IronPdfService.cs
public class IronPdfService : IPdfService
{
    private readonly ChromePdfRenderer _renderer;

    public IronPdfService()
    {
        _renderer = new ChromePdfRenderer();
        _renderer.RenderingOptions.PaperSize = PdfPaperSize.A4;
        _renderer.RenderingOptions.PrintHtmlBackgrounds = true;
    }

    public PdfDocument GenerateFromHtml(string html) =>
        _renderer.RenderHtmlAsPdf(html);

    public Task<PdfDocument> GenerateFromHtmlAsync(string html) =>
        _renderer.RenderHtmlAsPdfAsync(html);
}
' Program.vb
Public Sub ConfigureServices(services As IServiceCollection)
    ' Set license once
    IronPdf.License.LicenseKey = Configuration("IronPdf:LicenseKey")

    ' Register renderer as scoped service
    services.AddScoped(Of ChromePdfRenderer)()

    ' Or create a wrapper service
    services.AddScoped(Of IPdfService, IronPdfService)()
End Sub

' IronPdfService.vb
Public Class IronPdfService
    Implements IPdfService

    Private ReadOnly _renderer As ChromePdfRenderer

    Public Sub New()
        _renderer = New ChromePdfRenderer()
        _renderer.RenderingOptions.PaperSize = PdfPaperSize.A4
        _renderer.RenderingOptions.PrintHtmlBackgrounds = True
    End Sub

    Public Function GenerateFromHtml(html As String) As PdfDocument Implements IPdfService.GenerateFromHtml
        Return _renderer.RenderHtmlAsPdf(html)
    End Function

    Public Function GenerateFromHtmlAsync(html As String) As Task(Of PdfDocument) Implements IPdfService.GenerateFromHtmlAsync
        Return _renderer.RenderHtmlAsPdfAsync(html)
    End Function
End Class
$vbLabelText   $csharpLabel

效能比較

指標 Apryse PDF IronPDF
冷開始 快速（原生代碼） ~2s (Chromium init)
後續渲染 快速地 快速地
複雜的 HTML。 變數 (html2pdf 模組) 優秀 (Chromium)
CSS 支援。 限額 完整的 CSS3
JavaScript。 限額 支援

效能最佳化秘訣

// 1. Reuse renderer instance
private static readonly ChromePdfRenderer SharedRenderer = new ChromePdfRenderer();

// 2. Disable unnecessary features for speed
var renderer = new ChromePdfRenderer();
renderer.RenderingOptions.EnableJavaScript = false; // If not needed
renderer.RenderingOptions.WaitFor.RenderDelay(0);   // No delay
renderer.RenderingOptions.Timeout = 30000;          // 30s max

// 3. Proper disposal
using (var pdf = renderer.RenderHtmlAsPdf(html))
{
    pdf.SaveAs("output.pdf");
}
// 1. Reuse renderer instance
private static readonly ChromePdfRenderer SharedRenderer = new ChromePdfRenderer();

// 2. Disable unnecessary features for speed
var renderer = new ChromePdfRenderer();
renderer.RenderingOptions.EnableJavaScript = false; // If not needed
renderer.RenderingOptions.WaitFor.RenderDelay(0);   // No delay
renderer.RenderingOptions.Timeout = 30000;          // 30s max

// 3. Proper disposal
using (var pdf = renderer.RenderHtmlAsPdf(html))
{
    pdf.SaveAs("output.pdf");
}
' 1. Reuse renderer instance
Private Shared ReadOnly SharedRenderer As New ChromePdfRenderer()

' 2. Disable unnecessary features for speed
Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.EnableJavaScript = False ' If not needed
renderer.RenderingOptions.WaitFor.RenderDelay(0)   ' No delay
renderer.RenderingOptions.Timeout = 30000          ' 30s max

' 3. Proper disposal
Using pdf = renderer.RenderHtmlAsPdf(html)
    pdf.SaveAs("output.pdf")
End Using
$vbLabelText   $csharpLabel

排除常見的遷移問題

問題：模組路徑錯誤

移除所有模組路徑設定-IronPDF 內建 Chromium 引擎：

// Remove this
converter.SetModulePath("path/to/html2pdf");

// Just use the renderer
var renderer = new ChromePdfRenderer();
// Remove this
converter.SetModulePath("path/to/html2pdf");

// Just use the renderer
var renderer = new ChromePdfRenderer();
$vbLabelText   $csharpLabel

問題：PDFNet.Initialize() 未找到。

以IronPDF授權設定取代：

// Remove this
PDFNet.Initialize("KEY");
PDFNet.SetResourcesPath("path");

// Use this (optional for development)
IronPdf.License.LicenseKey = "YOUR-KEY";
// Remove this
PDFNet.Initialize("KEY");
PDFNet.SetResourcesPath("path");

// Use this (optional for development)
IronPdf.License.LicenseKey = "YOUR-KEY";
' Remove this
PDFNet.Initialize("KEY")
PDFNet.SetResourcesPath("path")

' Use this (optional for development)
IronPdf.License.LicenseKey = "YOUR-KEY"
$vbLabelText   $csharpLabel

問題：PDFViewCtrl 替換

IronPDF 不包含檢視器控制項。 選項：

  • 使用 PDF.js 作為網頁檢視器
  • 使用系統 PDF 檢視器
  • 考慮第三方檢視器元件

遷移後檢查清單

完成程式碼遷移後，請驗證下列事項：

  • 驗證 PDF 輸出品質符合預期
  • 測試所有極端情況（大型文件、複雜的 CSS）
  • 比較性能指標
  • 如果需要，更新 Docker 配置
  • 移除 Apryse 授權及相關配置
  • 記錄所有IronPDF特有的配置
  • 訓練團隊掌握新的 API 模式
  • 如有需要，更新 CI/CD 管線

讓您的 PDF 基礎架構面向未來

由於 .NET 10 即將面世，C# 14 也將引進新的語言功能，因此選擇具有現代慣例的原生 .NET PDF 函式庫可確保與不斷演進的執行時功能相容。IronPDFfor .NET 承諾支援最新的 .NET 版本，這意味著當專案延伸至 2025 年和 2026 年時，您的移轉投資將獲得回報 - 而無需每年續訂。

其他資源

從Apryse PDF轉換到IronPDF可將您的 PDF 程式碼基礎從複雜的 C++ 模式轉換為慣用的 C#。 消除初始化模板、模組路徑設定和基於訂閱的授權，可立即提高生產力，同時降低長期成本。

Curtis Chau
Curtis Chau
  立即與工程團隊聊天
技術作家

Curtis Chau 擁有卡爾頓大學計算機科學學士學位，專注於前端開發，擅長於 Node.js、TypeScript、JavaScript 和 React。Curtis 熱衷於創建直觀且美觀的用戶界面，喜歡使用現代框架並打造結構良好、視覺吸引人的手冊。

除了開發之外，Curtis 對物聯網 (IoT) 有著濃厚的興趣，探索將硬體和軟體結合的創新方式。在閒暇時間，他喜愛遊戲並構建 Discord 機器人，結合科技與創意的樂趣。

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