PDFSharp與IronPDF：技術比較指南

// NuGet: Install-Package Syncfusion.Pdf.Net.Core
using Syncfusion.Pdf;
using Syncfusion.Pdf.Graphics;
using Syncfusion.Drawing;
using System.IO;

class Program
{
    static void Main()
    {
        // Create a new PDF document
        PdfDocument document = new PdfDocument();

        // Add a page
        PdfPage page = document.Pages.Add();

        // Create a font
        PdfFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 12);

        // Draw text
        page.Graphics.DrawString("Hello, World!", font, PdfBrushes.Black, new PointF(10, 10));

        // Save the document
        FileStream fileStream = new FileStream("Output.pdf", FileMode.Create);
        document.Save(fileStream);
        document.Close(true);
        fileStream.Close();
    }
}

Imports Syncfusion.Pdf
Imports Syncfusion.Pdf.Graphics
Imports Syncfusion.Drawing
Imports System.IO

Module Program
    Sub Main()
        ' Create a new PDF document
        Dim document As New PdfDocument()

        ' Add a page
        Dim page As PdfPage = document.Pages.Add()

        ' Create a font
        Dim font As PdfFont = New PdfStandardFont(PdfFontFamily.Helvetica, 12)

        ' Draw text
        page.Graphics.DrawString("Hello, World!", font, PdfBrushes.Black, New PointF(10, 10))

        ' Save the document
        Dim fileStream As New FileStream("Output.pdf", FileMode.Create)
        document.Save(fileStream)
        document.Close(True)
        fileStream.Close()
    End Sub
End Module

// NuGet: Install-Package IronPdf
using IronPdf;
using IronPdf.Rendering;

class Program
{
    static void Main()
    {
        // Create a PDF from HTML string
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf("<h1>Hello, World!</h1>");

        // Save the document
        pdf.SaveAs("Output.pdf");
    }
}

Imports IronPdf
Imports IronPdf.Rendering

Class Program
    Shared Sub Main()
        ' Create a PDF from HTML string
        Dim renderer As New ChromePdfRenderer()
        Dim pdf = renderer.RenderHtmlAsPdf("<h1>Hello, World!</h1>")

        ' Save the document
        pdf.SaveAs("Output.pdf")
    End Sub
End Class

// NuGet: Install-Package Syncfusion.Pdf.Net.Core
using Syncfusion.HtmlConverter;
using Syncfusion.Pdf;
using System.IO;

class Program
{
    static void Main()
    {
        // Initialize HTML to PDF converter
        HtmlToPdfConverter htmlConverter = new HtmlToPdfConverter();

        // Convert URL to PDF
        PdfDocument document = htmlConverter.Convert("https://www.example.com");

        // Save the document
        FileStream fileStream = new FileStream("Output.pdf", FileMode.Create);
        document.Save(fileStream);
        document.Close(true);
        fileStream.Close();
    }
}

Imports Syncfusion.HtmlConverter
Imports Syncfusion.Pdf
Imports System.IO

Module Program
    Sub Main()
        ' Initialize HTML to PDF converter
        Dim htmlConverter As New HtmlToPdfConverter()

        ' Convert URL to PDF
        Dim document As PdfDocument = htmlConverter.Convert("https://www.example.com")

        ' Save the document
        Dim fileStream As New FileStream("Output.pdf", FileMode.Create)
        document.Save(fileStream)
        document.Close(True)
        fileStream.Close()
    End Sub
End Module

// NuGet: Install-Package IronPdf
using IronPdf;

class Program
{
    static void Main()
    {
        // Create a PDF from a URL
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderUrlAsPdf("https://www.example.com");

        // Save the PDF
        pdf.SaveAs("Output.pdf");
    }
}

Imports IronPdf

Class Program
    Shared Sub Main()
        ' Create a PDF from a URL
        Dim renderer = New ChromePdfRenderer()
        Dim pdf = renderer.RenderUrlAsPdf("https://www.example.com")

        ' Save the PDF
        pdf.SaveAs("Output.pdf")
    End Sub
End Class

// NuGet: Install-Package Syncfusion.Pdf.Net.Core
using Syncfusion.Pdf;
using Syncfusion.Pdf.Parsing;
using System.IO;

class Program
{
    static void Main()
    {
        // Load the first PDF document
        FileStream stream1 = new FileStream("Document1.pdf", FileMode.Open, FileAccess.Read);
        PdfLoadedDocument loadedDocument1 = new PdfLoadedDocument(stream1);

        // Load the second PDF document
        FileStream stream2 = new FileStream("Document2.pdf", FileMode.Open, FileAccess.Read);
        PdfLoadedDocument loadedDocument2 = new PdfLoadedDocument(stream2);

        // Merge the documents
        PdfDocument finalDocument = new PdfDocument();
        finalDocument.ImportPageRange(loadedDocument1, 0, loadedDocument1.Pages.Count - 1);
        finalDocument.ImportPageRange(loadedDocument2, 0, loadedDocument2.Pages.Count - 1);

        // Save the merged document
        FileStream outputStream = new FileStream("Merged.pdf", FileMode.Create);
        finalDocument.Save(outputStream);

        // Close all documents
        finalDocument.Close(true);
        loadedDocument1.Close(true);
        loadedDocument2.Close(true);
        stream1.Close();
        stream2.Close();
        outputStream.Close();
    }
}

Imports Syncfusion.Pdf
Imports Syncfusion.Pdf.Parsing
Imports System.IO

Class Program
    Shared Sub Main()
        ' Load the first PDF document
        Dim stream1 As New FileStream("Document1.pdf", FileMode.Open, FileAccess.Read)
        Dim loadedDocument1 As New PdfLoadedDocument(stream1)

        ' Load the second PDF document
        Dim stream2 As New FileStream("Document2.pdf", FileMode.Open, FileAccess.Read)
        Dim loadedDocument2 As New PdfLoadedDocument(stream2)

        ' Merge the documents
        Dim finalDocument As New PdfDocument()
        finalDocument.ImportPageRange(loadedDocument1, 0, loadedDocument1.Pages.Count - 1)
        finalDocument.ImportPageRange(loadedDocument2, 0, loadedDocument2.Pages.Count - 1)

        ' Save the merged document
        Dim outputStream As New FileStream("Merged.pdf", FileMode.Create)
        finalDocument.Save(outputStream)

        ' Close all documents
        finalDocument.Close(True)
        loadedDocument1.Close(True)
        loadedDocument2.Close(True)
        stream1.Close()
        stream2.Close()
        outputStream.Close()
    End Sub
End Class

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

class Program
{
    static void Main()
    {
        // Load PDF documents
        var pdf1 = PdfDocument.FromFile("Document1.pdf");
        var pdf2 = PdfDocument.FromFile("Document2.pdf");

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

        // Save the merged document
        merged.SaveAs("Merged.pdf");
    }
}

Imports IronPdf
Imports System.Collections.Generic

Class Program
    Shared Sub Main()
        ' Load PDF documents
        Dim pdf1 = PdfDocument.FromFile("Document1.pdf")
        Dim pdf2 = PdfDocument.FromFile("Document2.pdf")

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

        ' Save the merged document
        merged.SaveAs("Merged.pdf")
    End Sub
End Class

# Multiple packages may be needed
dotnet add package Syncfusion.Pdf.Net.Core
dotnet add package Syncfusion.HtmlToPdfConverter.Net.Windows
dotnet add package Syncfusion.Pdf.Imaging.Net.Core
dotnet add package Syncfusion.Licensing

// Must register before any Syncfusion calls
Syncfusion.Licensing.SyncfusionLicenseProvider.RegisterLicense("YOUR-SYNCFUSION-KEY");

' Must register before any Syncfusion calls
Syncfusion.Licensing.SyncfusionLicenseProvider.RegisterLicense("YOUR-SYNCFUSION-KEY")

# Single package
dotnet add package IronPdf

// One-time at startup
IronPdf.License.LicenseKey = "YOUR-IRONPDF-KEY";

' One-time at startup
IronPdf.License.LicenseKey = "YOUR-IRONPDF-KEY"