C# PDF程式庫

HTML 轉 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");

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

影片

如何在 ASPNET 中將視圖轉換為 PDF

Curtis Chau

Updated: 2026年7月19日

從SAP Crystal Reports遷移到IronPDF將您的報告工作流程從具有COM時代依賴性的運行時MSI再分發轉換為現代NuGet包。本指南提供了一個逐步的遷移路徑，消除了運行時安裝程式的需求，解除SAP生態系統的鎖定，並解鎖了Crystal Reports for Visual Studio（CR4VS）不支持的.NET 6/8/9和Linux/Docker目標。

為什麼從SAP Crystal Reports遷移到IronPDF

了解SAP Crystal Reports

SAP Crystal Reports是一個廣泛用於生成"像素完美"報告的企業報告平台，具有廣泛的資料源連接能力和長期存在的設計器生態系統。 Crystal Reports Designer仍然是用於構建複雜報告布局的SAP堆棧內一個有生產力的工具。

然而，運行時的COM時代架構和僅支持Windows/.NET Framework的局限性給目標.NET 6/8/9、Linux或優先容器部署的團隊帶來阻礙。

遷移的主要原因

**運行時MSI可再分發：**Crystal Reports運行時作為MSI安裝程式（通常根據32/64位和地區而定，大小從數十MB到數百MB不等）發佈，而不是NuGet包
**SAP生態系統鎖定：**受SAP的發佈周期和產品路線圖約束；SAP已確認2027年末結束CR4VS的主流維護
**許可：**CR4VS本身可以免費下載，運行時也可以免費再分發，但是Crystal Reports設計工具系列（CR 2020 / CR 2025）和BI平台是商業SAP的SKU
**舊有架構：**依賴COM的運行時DLL目標.NET Framework 4.x，不能在.NET Core / .NET 5+下載入
**不支持.NET Core / .NET 5+：**沒有針對現代.NET的Crystal Reports運行時的路線圖；專案保持釘在.NET Framework 4.x
**32位運行時停產：**SAP已確認32位CR .NET運行時在SP 39（2025年12月）後停產；未來服務包僅提供64位
**報告設計器依賴性：**需要CR4VS Visual Studio擴展或獨立的Crystal Reports設計工具來建立.rpt文件

SAP Crystal Reports的隱藏成本

成本因素	SAP Crystal Reports	IronPDF
運行時分發	可再分發的MSI安裝程式	NuGet套件
安裝	運行時安裝程式+ VS擴展	`dotnet add package IronPdf`
部署	在目標機器上運行MSI	xcopy / 發佈
64位支持	是（32位運行時在SP 39後結束，2025年12月）	本機
.NET Core / .NET 5+	不支持（僅限框架4.x）	完全支持（.NET 6/8/9，框架4.6.2+）
雲端部署	僅限Windows虛擬機	簡單
Linux / Docker	不支持（僅限Windows）	支援

SAP Crystal Reports與IronPDF的比較

功能	SAP Crystal Reports	IronPDF
主要功能	企業報告平台	HTML到PDF轉換引擎和PDF操作
整合	在SAP生態系統中最好	現代.NET整合，輕量級NuGet包
易用性	複雜的設置和部署	簡化整合，支持.NET開發者
報告設計器	必需的	可選（HTML/CSS）
模板格式	.rpt（二進位）	HTML/CSS
HTML 到 PDF	否	完整的Chromium
URL至PDF	否	是
CSS 支援	否	完整支持 CSS3
JavaScript	否	完整的ES2024
PDF 操作	否	完整（合併、拆分、編輯）
數位簽名	否	是
PDF/A合規性	否	是
現代相關性	下降，被現代替代品取代	現代，與當前技術良好整合

對於目標現代.NET（6、8、9）和跨平台部署的團隊，IronPDF提供了Crystal Reports運行時——鎖定到.NET Framework 4.x——無法提供的本機支持。

開始之前

前提條件

.NET環境： .NET Framework 4.6.2+或.NET 6 / 8 / 9
NuGet存取： 有能力安裝NuGet套件
IronPDF授權： 從ironpdf.com獲取您的授權金鑰

NuGet包變更

# Crystal Reports for Visual Studio is not distributed by SAP on NuGet.
# Projects typically reference the GAC-installed CrystalDecisions.*.dll
# assemblies delivered by the CR4VS / CR runtime MSI. Community-maintained
#NuGetwrappers such as CrystalReports.Engine exist for build automation
# but are not official SAP packages.

# 1. Remove direct assembly references (CrystalDecisions.*.dll) from your .csproj
# 2. If using a communityNuGetwrapper, remove it:
dotnet remove package CrystalReports.Engine

# 3. Uninstall the Crystal Reports runtime MSI from build/deploy targets

# 4. Install IronPDF
dotnet add package IronPdf

# Crystal Reports for Visual Studio is not distributed by SAP on NuGet.
# Projects typically reference the GAC-installed CrystalDecisions.*.dll
# assemblies delivered by the CR4VS / CR runtime MSI. Community-maintained
#NuGetwrappers such as CrystalReports.Engine exist for build automation
# but are not official SAP packages.

# 1. Remove direct assembly references (CrystalDecisions.*.dll) from your .csproj
# 2. If using a communityNuGetwrapper, remove it:
dotnet remove package CrystalReports.Engine

# 3. Uninstall the Crystal Reports runtime MSI from build/deploy targets

# 4. Install IronPDF
dotnet add package IronPdf

SHELL

授權配置

// Add at application startup
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

// Add at application startup
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

' Add at application startup
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"

' Add at application startup
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"

完整API參考

名稱空間變更

// Before: SAP Crystal Reports
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using CrystalDecisions.ReportAppServer;

// After: IronPDF
using IronPdf;

// Before: SAP Crystal Reports
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using CrystalDecisions.ReportAppServer;

// After: IronPDF
using IronPdf;

Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Imports CrystalDecisions.ReportAppServer

Imports IronPdf

Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Imports CrystalDecisions.ReportAppServer

Imports IronPdf

核心API對應

SAP Crystal Reports	IronPDF	注釋
`ReportDocument`	`ChromePdfRenderer`	核心渲染
`ReportDocument.Load()`	`RenderHtmlAsPdf()`	載入內容
`.rpt`文件	HTML/CSS模板	模板格式
`SetDataSource()`	HTML和資料	資料綁定
`SetParameterValue()`	字串插值	參數
`ExportToDisk()`	`pdf.SaveAs()`	保存文件
`ExportToStream()`	`pdf.BinaryData`	獲取字節
`PrintToPrinter()`	`pdf.Print()`	列印
`Database.Tables`	C#資料存取	資料源
`FormulaFieldDefinitions`	C#邏輯	計算
`SummaryInfo`	`pdf.MetaData`	PDF元資料
`ExportFormatType.PortableDocFormat`	預設輸出	PDF本機

程式碼遷移範例

範例1：HTML轉PDF轉換

之前（SAP Crystal Reports）：

// NuGet: Install-Package CrystalReports.Engine
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using System;

class Program
{
    static void Main()
    {
        // Crystal Reports requires a .rpt file template
        ReportDocument reportDocument = new ReportDocument();
        reportDocument.Load("Report.rpt");
        
        // Crystal Reports doesn't directly support HTML
        // You need to bind data to the report template
        // reportDocument.SetDataSource(dataSet);
        
        ExportOptions exportOptions = reportDocument.ExportOptions;
        exportOptions.ExportDestinationType = ExportDestinationType.DiskFile;
        exportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;
        
        DiskFileDestinationOptions diskOptions = new DiskFileDestinationOptions();
        diskOptions.DiskFileName = "output.pdf";
        exportOptions.DestinationOptions = diskOptions;
        
        reportDocument.Export();
        reportDocument.Close();
        reportDocument.Dispose();
    }
}

// NuGet: Install-Package CrystalReports.Engine
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using System;

class Program
{
    static void Main()
    {
        // Crystal Reports requires a .rpt file template
        ReportDocument reportDocument = new ReportDocument();
        reportDocument.Load("Report.rpt");
        
        // Crystal Reports doesn't directly support HTML
        // You need to bind data to the report template
        // reportDocument.SetDataSource(dataSet);
        
        ExportOptions exportOptions = reportDocument.ExportOptions;
        exportOptions.ExportDestinationType = ExportDestinationType.DiskFile;
        exportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;
        
        DiskFileDestinationOptions diskOptions = new DiskFileDestinationOptions();
        diskOptions.DiskFileName = "output.pdf";
        exportOptions.DestinationOptions = diskOptions;
        
        reportDocument.Export();
        reportDocument.Close();
        reportDocument.Dispose();
    }
}

' NuGet: Install-Package CrystalReports.Engine
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared

Module Program
    Sub Main()
        ' Crystal Reports requires a .rpt file template
        Dim reportDocument As New ReportDocument()
        reportDocument.Load("Report.rpt")

        ' Crystal Reports doesn't directly support HTML
        ' You need to bind data to the report template
        ' reportDocument.SetDataSource(dataSet)

        Dim exportOptions As ExportOptions = reportDocument.ExportOptions
        exportOptions.ExportDestinationType = ExportDestinationType.DiskFile
        exportOptions.ExportFormatType = ExportFormatType.PortableDocFormat

        Dim diskOptions As New DiskFileDestinationOptions()
        diskOptions.DiskFileName = "output.pdf"
        exportOptions.DestinationOptions = diskOptions

        reportDocument.Export()
        reportDocument.Close()
        reportDocument.Dispose()
    End Sub
End Module

' NuGet: Install-Package CrystalReports.Engine
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared

Module Program
    Sub Main()
        ' Crystal Reports requires a .rpt file template
        Dim reportDocument As New ReportDocument()
        reportDocument.Load("Report.rpt")

        ' Crystal Reports doesn't directly support HTML
        ' You need to bind data to the report template
        ' reportDocument.SetDataSource(dataSet)

        Dim exportOptions As ExportOptions = reportDocument.ExportOptions
        exportOptions.ExportDestinationType = ExportDestinationType.DiskFile
        exportOptions.ExportFormatType = ExportFormatType.PortableDocFormat

        Dim diskOptions As New DiskFileDestinationOptions()
        diskOptions.DiskFileName = "output.pdf"
        exportOptions.DestinationOptions = diskOptions

        reportDocument.Export()
        reportDocument.Close()
        reportDocument.Dispose()
    End Sub
End Module

之後（IronPDF）：

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        // Create a PDF from HTML string
        var renderer = new ChromePdfRenderer();
        
        string htmlContent = "<h1>Hello World</h1><p>This is a PDF generated from HTML.</p>";
        
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        pdf.SaveAs("output.pdf");
        
        Console.WriteLine("PDF created successfully!");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        // Create a PDF from HTML string
        var renderer = new ChromePdfRenderer();
        
        string htmlContent = "<h1>Hello World</h1><p>This is a PDF generated from HTML.</p>";
        
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        pdf.SaveAs("output.pdf");
        
        Console.WriteLine("PDF created successfully!");
    }
}

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports System

Module Program
    Sub Main()
        ' Create a PDF from HTML string
        Dim renderer As New ChromePdfRenderer()
        
        Dim htmlContent As String = "<h1>Hello World</h1><p>This is a PDF generated from HTML.</p>"
        
        Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)
        pdf.SaveAs("output.pdf")
        
        Console.WriteLine("PDF created successfully!")
    End Sub
End Module

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports System

Module Program
    Sub Main()
        ' Create a PDF from HTML string
        Dim renderer As New ChromePdfRenderer()
        
        Dim htmlContent As String = "<h1>Hello World</h1><p>This is a PDF generated from HTML.</p>"
        
        Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)
        pdf.SaveAs("output.pdf")
        
        Console.WriteLine("PDF created successfully!")
    End Sub
End Module

此範例說明了根本的範式差異。 SAP Crystal Reports需要一個在Crystal Reports設計器中建立的預設計DiskFileDestinationOptions。該庫不直接支持HTML內容——您必須將資料綁定到報告模板。

IronPDF直接接受HTML字串：建立一個SaveAs()。不需要設計者，不需要二進制模板，不需要複雜的導出配置。查看更多HTML到PDF文件以獲得完整的範例。

範例2：URL轉PDF轉換

之前（SAP Crystal Reports）：

// NuGet: Install-Package CrystalReports.Engine
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using System;
using System.Net;

class Program
{
    static void Main()
    {
        // Crystal Reports cannot directly convert URLs to PDF
        // You need to create a report template first
        
        // Download HTML content
        WebClient client = new WebClient();
        string htmlContent = client.DownloadString("https://example.com");
        
        // Crystal Reports requires .rpt template and data binding
        // This approach is not straightforward for URL conversion
        ReportDocument reportDocument = new ReportDocument();
        reportDocument.Load("WebReport.rpt");
        
        // Manual data extraction and binding required
        // reportDocument.SetDataSource(extractedData);
        
        reportDocument.ExportToDisk(ExportFormatType.PortableDocFormat, "output.pdf");
        reportDocument.Close();
        reportDocument.Dispose();
    }
}

// NuGet: Install-Package CrystalReports.Engine
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using System;
using System.Net;

class Program
{
    static void Main()
    {
        // Crystal Reports cannot directly convert URLs to PDF
        // You need to create a report template first
        
        // Download HTML content
        WebClient client = new WebClient();
        string htmlContent = client.DownloadString("https://example.com");
        
        // Crystal Reports requires .rpt template and data binding
        // This approach is not straightforward for URL conversion
        ReportDocument reportDocument = new ReportDocument();
        reportDocument.Load("WebReport.rpt");
        
        // Manual data extraction and binding required
        // reportDocument.SetDataSource(extractedData);
        
        reportDocument.ExportToDisk(ExportFormatType.PortableDocFormat, "output.pdf");
        reportDocument.Close();
        reportDocument.Dispose();
    }
}

' NuGet: Install-Package CrystalReports.Engine
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Imports System
Imports System.Net

Module Program
    Sub Main()
        ' Crystal Reports cannot directly convert URLs to PDF
        ' You need to create a report template first

        ' Download HTML content
        Dim client As New WebClient()
        Dim htmlContent As String = client.DownloadString("https://example.com")

        ' Crystal Reports requires .rpt template and data binding
        ' This approach is not straightforward for URL conversion
        Dim reportDocument As New ReportDocument()
        reportDocument.Load("WebReport.rpt")

        ' Manual data extraction and binding required
        ' reportDocument.SetDataSource(extractedData)

        reportDocument.ExportToDisk(ExportFormatType.PortableDocFormat, "output.pdf")
        reportDocument.Close()
        reportDocument.Dispose()
    End Sub
End Module

' NuGet: Install-Package CrystalReports.Engine
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Imports System
Imports System.Net

Module Program
    Sub Main()
        ' Crystal Reports cannot directly convert URLs to PDF
        ' You need to create a report template first

        ' Download HTML content
        Dim client As New WebClient()
        Dim htmlContent As String = client.DownloadString("https://example.com")

        ' Crystal Reports requires .rpt template and data binding
        ' This approach is not straightforward for URL conversion
        Dim reportDocument As New ReportDocument()
        reportDocument.Load("WebReport.rpt")

        ' Manual data extraction and binding required
        ' reportDocument.SetDataSource(extractedData)

        reportDocument.ExportToDisk(ExportFormatType.PortableDocFormat, "output.pdf")
        reportDocument.Close()
        reportDocument.Dispose()
    End Sub
End Module

之後（IronPDF）：

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        // Create a PDF from a URL
        var renderer = new ChromePdfRenderer();
        
        var pdf = renderer.RenderUrlAsPdf("https://example.com");
        pdf.SaveAs("output.pdf");
        
        Console.WriteLine("PDF created from URL successfully!");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        // Create a PDF from a URL
        var renderer = new ChromePdfRenderer();
        
        var pdf = renderer.RenderUrlAsPdf("https://example.com");
        pdf.SaveAs("output.pdf");
        
        Console.WriteLine("PDF created from URL successfully!");
    }
}

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports System

Module Program
    Sub Main()
        ' Create a PDF from a URL
        Dim renderer As New ChromePdfRenderer()
        
        Dim pdf = renderer.RenderUrlAsPdf("https://example.com")
        pdf.SaveAs("output.pdf")
        
        Console.WriteLine("PDF created from URL successfully!")
    End Sub
End Module

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports System

Module Program
    Sub Main()
        ' Create a PDF from a URL
        Dim renderer As New ChromePdfRenderer()
        
        Dim pdf = renderer.RenderUrlAsPdf("https://example.com")
        pdf.SaveAs("output.pdf")
        
        Console.WriteLine("PDF created from URL successfully!")
    End Sub
End Module

SAP Crystal Reports無法直接將URL轉換為PDF。您需要手動下載HTML內容，使用.rpt模板中——這是一個不簡單的過程，需要大量的人工工作。

IronPDF的RenderUrlAsPdf()方法捕獲完全呈現的網頁，包含所有CSS，JavaScript和圖像，這只需要一個調用。在我們的教程中了解更多。

範例3：具有頁碼的標頭和頁腳

之前（SAP Crystal Reports）：

// NuGet: Install-Package CrystalReports.Engine
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using System;

class Program
{
    static void Main()
    {
        // Crystal Reports requires design-time configuration
        ReportDocument reportDocument = new ReportDocument();
        reportDocument.Load("Report.rpt");
        
        // Headers and footers must be designed in the .rpt file
        // using Crystal Reports designer
        // You can set parameter values programmatically
        reportDocument.SetParameterValue("HeaderText", "Company Name");
        reportDocument.SetParameterValue("FooterText", "Page ");
        
        // Crystal Reports handles page numbers through formula fields
        // configured in the designer
        
        reportDocument.ExportToDisk(ExportFormatType.PortableDocFormat, "output.pdf");
        reportDocument.Close();
        reportDocument.Dispose();
    }
}

// NuGet: Install-Package CrystalReports.Engine
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using System;

class Program
{
    static void Main()
    {
        // Crystal Reports requires design-time configuration
        ReportDocument reportDocument = new ReportDocument();
        reportDocument.Load("Report.rpt");
        
        // Headers and footers must be designed in the .rpt file
        // using Crystal Reports designer
        // You can set parameter values programmatically
        reportDocument.SetParameterValue("HeaderText", "Company Name");
        reportDocument.SetParameterValue("FooterText", "Page ");
        
        // Crystal Reports handles page numbers through formula fields
        // configured in the designer
        
        reportDocument.ExportToDisk(ExportFormatType.PortableDocFormat, "output.pdf");
        reportDocument.Close();
        reportDocument.Dispose();
    }
}

' NuGet: Install-Package CrystalReports.Engine
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Imports System

Module Program
    Sub Main()
        ' Crystal Reports requires design-time configuration
        Dim reportDocument As New ReportDocument()
        reportDocument.Load("Report.rpt")

        ' Headers and footers must be designed in the .rpt file
        ' using Crystal Reports designer
        ' You can set parameter values programmatically
        reportDocument.SetParameterValue("HeaderText", "Company Name")
        reportDocument.SetParameterValue("FooterText", "Page ")

        ' Crystal Reports handles page numbers through formula fields
        ' configured in the designer

        reportDocument.ExportToDisk(ExportFormatType.PortableDocFormat, "output.pdf")
        reportDocument.Close()
        reportDocument.Dispose()
    End Sub
End Module

' NuGet: Install-Package CrystalReports.Engine
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Imports System

Module Program
    Sub Main()
        ' Crystal Reports requires design-time configuration
        Dim reportDocument As New ReportDocument()
        reportDocument.Load("Report.rpt")

        ' Headers and footers must be designed in the .rpt file
        ' using Crystal Reports designer
        ' You can set parameter values programmatically
        reportDocument.SetParameterValue("HeaderText", "Company Name")
        reportDocument.SetParameterValue("FooterText", "Page ")

        ' Crystal Reports handles page numbers through formula fields
        ' configured in the designer

        reportDocument.ExportToDisk(ExportFormatType.PortableDocFormat, "output.pdf")
        reportDocument.Close()
        reportDocument.Dispose()
    End Sub
End Module

之後（IronPDF）：

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        
        // Configure headers and footers
        renderer.RenderingOptions.TextHeader.CenterText = "Company Name";
        renderer.RenderingOptions.TextHeader.FontSize = 12;
        
        renderer.RenderingOptions.TextFooter.LeftText = "Confidential";
        renderer.RenderingOptions.TextFooter.RightText = "Page {page} of {total-pages}";
        renderer.RenderingOptions.TextFooter.FontSize = 10;
        
        string htmlContent = "<h1>Document Title</h1><p>Document content goes here.</p>";
        
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        pdf.SaveAs("output.pdf");
        
        Console.WriteLine("PDF with headers and footers created!");
    }
}

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        
        // Configure headers and footers
        renderer.RenderingOptions.TextHeader.CenterText = "Company Name";
        renderer.RenderingOptions.TextHeader.FontSize = 12;
        
        renderer.RenderingOptions.TextFooter.LeftText = "Confidential";
        renderer.RenderingOptions.TextFooter.RightText = "Page {page} of {total-pages}";
        renderer.RenderingOptions.TextFooter.FontSize = 10;
        
        string htmlContent = "<h1>Document Title</h1><p>Document content goes here.</p>";
        
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        pdf.SaveAs("output.pdf");
        
        Console.WriteLine("PDF with headers and footers created!");
    }
}

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports System

Module Program
    Sub Main()
        Dim renderer = New ChromePdfRenderer()

        ' Configure headers and footers
        renderer.RenderingOptions.TextHeader.CenterText = "Company Name"
        renderer.RenderingOptions.TextHeader.FontSize = 12

        renderer.RenderingOptions.TextFooter.LeftText = "Confidential"
        renderer.RenderingOptions.TextFooter.RightText = "Page {page} of {total-pages}"
        renderer.RenderingOptions.TextFooter.FontSize = 10

        Dim htmlContent As String = "<h1>Document Title</h1><p>Document content goes here.</p>"

        Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)
        pdf.SaveAs("output.pdf")

        Console.WriteLine("PDF with headers and footers created!")
    End Sub
End Module

' NuGet: Install-Package IronPdf
Imports IronPdf
Imports System

Module Program
    Sub Main()
        Dim renderer = New ChromePdfRenderer()

        ' Configure headers and footers
        renderer.RenderingOptions.TextHeader.CenterText = "Company Name"
        renderer.RenderingOptions.TextHeader.FontSize = 12

        renderer.RenderingOptions.TextFooter.LeftText = "Confidential"
        renderer.RenderingOptions.TextFooter.RightText = "Page {page} of {total-pages}"
        renderer.RenderingOptions.TextFooter.FontSize = 10

        Dim htmlContent As String = "<h1>Document Title</h1><p>Document content goes here.</p>"

        Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)
        pdf.SaveAs("output.pdf")

        Console.WriteLine("PDF with headers and footers created!")
    End Sub
End Module

SAP Crystal Reports需要為頁眉和頁腳進行設計時配置。您必須在.rpt文件中使用Crystal Reports設計器設計它們，然後在運行時傳遞像"FooterText"一樣的參數值。頁碼必須通過設計器中的公式字段來配置。

IronPDF通過TextFooter屬性提供程式化的頁眉/頁腳配置。可在程式碼中直接設置FontSize。頁碼使用{total-pages}占位符——不需要設計器。

常見遷移問題

問題1：.rpt文件轉換

**SAP Crystal Reports：**二進位.rpt文件，嵌入了布局、資料、公式。

**解決方案：**不能直接轉換——必須重新建立為HTML：

在Crystal Reports設計器中打開.rpt
文件布局、字體、顏色
記錄所有公式字段
用HTML/CSS重建
將公式轉換為C#程式碼

問題2：資料庫連接

**SAP Crystal Reports：**嵌入連接字串和ODBC。

**解決方案：**使用您的應用程式的資料層：

// Instead of Crystal's database integration
var data = await _dbContext.Orders
    .Where(o => o.Date >= startDate && o.Date <= endDate)
    .ToListAsync();

// Bind to HTML template
var html = GenerateReportHtml(data);

// Instead of Crystal's database integration
var data = await _dbContext.Orders
    .Where(o => o.Date >= startDate && o.Date <= endDate)
    .ToListAsync();

// Bind to HTML template
var html = GenerateReportHtml(data);

Option Strict On
Option Infer On

' Instead of Crystal's database integration
Dim data = Await _dbContext.Orders _
    .Where(Function(o) o.Date >= startDate AndAlso o.Date <= endDate) _
    .ToListAsync()

' Bind to HTML template
Dim html = GenerateReportHtml(data)

Option Strict On
Option Infer On

' Instead of Crystal's database integration
Dim data = Await _dbContext.Orders _
    .Where(Function(o) o.Date >= startDate AndAlso o.Date <= endDate) _
    .ToListAsync()

' Bind to HTML template
Dim html = GenerateReportHtml(data)

問題3：運行時依賴性

**SAP Crystal Reports：**需要安裝Crystal Reports運行時（500MB以上）。

**解決方案：**IronPDF是自帶的：

# Just add theNuGetpackage
dotnet add package IronPdf
# That's it - no additional installs needed

# Just add theNuGetpackage
dotnet add package IronPdf
# That's it - no additional installs needed

SHELL

問題4：32-bit/64-bit和.NET Framework鎖定

**SAP Crystal Reports：**Crystal Reports運行時依賴於COM並分發於獨立的32位和64位MSI中。 SAP已確認32位CR .NET運行時在SP 39（2025年12月）後停產；未來服務包僅提供64位。運行時目標.NET Framework 4.x，且不能在.NET Core /.NET 5+下載入。

**解決方案：**IronPDF可在.NET Framework 4.6.2+、.NET 6、.NET 8和.NET 9上運行——包括Linux和Docker。 64位或AnyCPU不需要特殊配置。

遷移後的新能力

遷移到IronPDF後，您獲得SAP Crystal Reports無法提供的功能：

PDF合併

var pdf1 = PdfDocument.FromFile("report1.pdf");
var pdf2 = PdfDocument.FromFile("report2.pdf");
var merged = PdfDocument.Merge(pdf1, pdf2);
merged.SaveAs("complete_report.pdf");

var pdf1 = PdfDocument.FromFile("report1.pdf");
var pdf2 = PdfDocument.FromFile("report2.pdf");
var merged = PdfDocument.Merge(pdf1, pdf2);
merged.SaveAs("complete_report.pdf");

Dim pdf1 = PdfDocument.FromFile("report1.pdf")
Dim pdf2 = PdfDocument.FromFile("report2.pdf")
Dim merged = PdfDocument.Merge(pdf1, pdf2)
merged.SaveAs("complete_report.pdf")

Dim pdf1 = PdfDocument.FromFile("report1.pdf")
Dim pdf2 = PdfDocument.FromFile("report2.pdf")
Dim merged = PdfDocument.Merge(pdf1, pdf2)
merged.SaveAs("complete_report.pdf")

PDF安全性

var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf(reportHtml);

pdf.MetaData.Title = "Quarterly Sales Report";
pdf.MetaData.Author = "Finance Department";

pdf.SecuritySettings.OwnerPassword = "admin123";
pdf.SecuritySettings.UserPassword = "view123";
pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.FullPrintRights;
pdf.SecuritySettings.AllowUserCopyPasteContent = false;

pdf.SaveAs("secure_report.pdf");

var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf(reportHtml);

pdf.MetaData.Title = "Quarterly Sales Report";
pdf.MetaData.Author = "Finance Department";

pdf.SecuritySettings.OwnerPassword = "admin123";
pdf.SecuritySettings.UserPassword = "view123";
pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.FullPrintRights;
pdf.SecuritySettings.AllowUserCopyPasteContent = false;

pdf.SaveAs("secure_report.pdf");

Dim renderer As New ChromePdfRenderer()
Dim pdf = renderer.RenderHtmlAsPdf(reportHtml)

pdf.MetaData.Title = "Quarterly Sales Report"
pdf.MetaData.Author = "Finance Department"

pdf.SecuritySettings.OwnerPassword = "admin123"
pdf.SecuritySettings.UserPassword = "view123"
pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.FullPrintRights
pdf.SecuritySettings.AllowUserCopyPasteContent = False

pdf.SaveAs("secure_report.pdf")

Dim renderer As New ChromePdfRenderer()
Dim pdf = renderer.RenderHtmlAsPdf(reportHtml)

pdf.MetaData.Title = "Quarterly Sales Report"
pdf.MetaData.Author = "Finance Department"

pdf.SecuritySettings.OwnerPassword = "admin123"
pdf.SecuritySettings.UserPassword = "view123"
pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.FullPrintRights
pdf.SecuritySettings.AllowUserCopyPasteContent = False

pdf.SaveAs("secure_report.pdf")

數位簽名

var signature = new PdfSignature("certificate.pfx", "password");
pdf.Sign(signature);

var signature = new PdfSignature("certificate.pfx", "password");
pdf.Sign(signature);

Dim signature = New PdfSignature("certificate.pfx", "password")
pdf.Sign(signature)

Dim signature = New PdfSignature("certificate.pfx", "password")
pdf.Sign(signature)

水印

using IronPdf.Editing;

pdf.ApplyWatermark("<h1 style='color:red; opacity:0.3;'>DRAFT</h1>");

using IronPdf.Editing;

pdf.ApplyWatermark("<h1 style='color:red; opacity:0.3;'>DRAFT</h1>");

Imports IronPdf.Editing

pdf.ApplyWatermark("<h1 style='color:red; opacity:0.3;'>DRAFT</h1>")

Imports IronPdf.Editing

pdf.ApplyWatermark("<h1 style='color:red; opacity:0.3;'>DRAFT</h1>")

功能比較總結

功能	SAP Crystal Reports	IronPDF
：安裝：
安裝方法	MSI + Visual Studio擴展	NuGet
部署	在目標機器上運行MSI	xcopy / 發佈
：平台支持：
.NET Core / .NET 5+	不支持	是（.NET 6/8/9）
64位本機	是（32位於2025年12月SP 39後結束）	是
Linux / Docker	不支持（僅限Windows）	是
Azure / AWS	僅限Windows虛擬機	簡單
：開發：
模板格式	.rpt（二進位）	HTML/CSS
學習曲線	Crystal語法	網路標準
IntelliSense	否	完整的C#
：渲染：
URL到PDF	否	是
CSS支持	否	完整支持 CSS3
JavaScript	否	完整的ES2024
：PDF功能：
拆分PDF	否	是
浮水印	有限	完整HTML
數位簽名	否	是
PDF/A	否	是