Sumatra PDF與IronPDF：技術比較指南

//Sumatra PDFis a desktop viewer — download from sumatrapdfreader.org
//Sumatra PDFdoesn't have direct C# integration forHTML到PDFconversion
// You would need to use external tools or libraries and then open with Sumatra
using System.Diagnostics;
using System.IO;

class Program
{
    static void Main()
    {
        //Sumatra PDFcannot directly convert HTML to PDF
        // You'd need to use wkhtmltopdf or similar, then view in Sumatra
        string htmlFile = "input.html";
        string pdfFile = "output.pdf";

        // Using wkhtmltopdf as intermediary
        ProcessStartInfo psi = new ProcessStartInfo
        {
            FileName = "wkhtmltopdf.exe",
            Arguments = $"{htmlFile} {pdfFile}",
            UseShellExecute = false
        };
        Process.Start(psi)?.WaitForExit();

        // Then open with Sumatra
        Process.Start("SumatraPDF.exe", pdfFile);
    }
}

Imports System.Diagnostics
Imports System.IO

Class Program
    Shared Sub Main()
        ' Sumatra PDF cannot directly convert HTML to PDF
        ' You'd need to use wkhtmltopdf or similar, then view in Sumatra
        Dim htmlFile As String = "input.html"
        Dim pdfFile As String = "output.pdf"

        ' Using wkhtmltopdf as intermediary
        Dim psi As New ProcessStartInfo With {
            .FileName = "wkhtmltopdf.exe",
            .Arguments = $"{htmlFile} {pdfFile}",
            .UseShellExecute = False
        }
        Process.Start(psi)?.WaitForExit()

        ' Then open with Sumatra
        Process.Start("SumatraPDF.exe", pdfFile)
    End Sub
End Class

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

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

        string htmlContent = "<h1>Hello World</h1><p>This isHTML到PDFconversion.</p>";

        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        pdf.SaveAs("output.pdf");

        Console.WriteLine("PDF created successfully!");
    }
}

Imports IronPdf
Imports System

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

        Dim htmlContent As String = "<h1>Hello World</h1><p>This is HTML to PDF conversion.</p>"

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

        Console.WriteLine("PDF created successfully!")
    End Sub
End Class

//Sumatra PDF— use the executable directly for command-line printing
using System.Diagnostics;
using System.IO;

class Program
{
    static void Main()
    {
        string pdfPath = "document.pdf";

        //Sumatra PDFexcels at viewing PDFs
        ProcessStartInfo startInfo = new ProcessStartInfo
        {
            FileName = "SumatraPDF.exe",
            Arguments = $"\"{pdfPath}\"",
            UseShellExecute = true
        };

        Process.Start(startInfo);

        // Optional: Open specific page
        // Arguments = $"-page 5 \"{pdfPath}\""
    }
}

Imports System.Diagnostics
Imports System.IO

Class Program
    Shared Sub Main()
        Dim pdfPath As String = "document.pdf"

        ' Sumatra PDF excels at viewing PDFs
        Dim startInfo As New ProcessStartInfo With {
            .FileName = "SumatraPDF.exe",
            .Arguments = $"""{pdfPath}""",
            .UseShellExecute = True
        }

        Process.Start(startInfo)

        ' Optional: Open specific page
        ' Arguments = $"-page 5 ""{pdfPath}"""
    End Sub
End Class

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

class Program
{
    static void Main()
    {
        var pdf = PdfDocument.FromFile("document.pdf");

        // Extract information
        Console.WriteLine($"Page Count: {pdf.PageCount}");

        //IronPDFcan manipulate and save, then open with default viewer
        pdf.SaveAs("modified.pdf");

        // Open with default PDF viewer
        Process.Start(new ProcessStartInfo("modified.pdf") { UseShellExecute = true });
    }
}

Imports IronPdf
Imports System
Imports System.Diagnostics

Class Program
    Shared Sub Main()
        Dim pdf = PdfDocument.FromFile("document.pdf")

        ' Extract information
        Console.WriteLine($"Page Count: {pdf.PageCount}")

        ' IronPDF can manipulate and save, then open with default viewer
        pdf.SaveAs("modified.pdf")

        ' Open with default PDF viewer
        Process.Start(New ProcessStartInfo("modified.pdf") With {.UseShellExecute = True})
    End Sub
End Class

//Sumatra PDFdoesn't provide C# API for text extraction
// You would need to use command-line tools or other libraries
using System.Diagnostics;
using System.IO;

class Program
{
    static void Main()
    {
        //Sumatra PDFis a viewer, not a text extraction library
        // You'd need to use PDFBox, iTextSharp, or similar for extraction

        string pdfFile = "document.pdf";

        // This would require external tools like pdftotext
        ProcessStartInfo psi = new ProcessStartInfo
        {
            FileName = "pdftotext.exe",
            Arguments = $"{pdfFile} output.txt",
            UseShellExecute = false
        };

        Process.Start(psi)?.WaitForExit();

        string extractedText = File.ReadAllText("output.txt");
        Console.WriteLine(extractedText);
    }
}

Imports System.Diagnostics
Imports System.IO

Module Program
    Sub Main()
        ' Sumatra PDF is a viewer, not a text extraction library
        ' You'd need to use PDFBox, iTextSharp, or similar for extraction

        Dim pdfFile As String = "document.pdf"

        ' This would require external tools like pdftotext
        Dim psi As New ProcessStartInfo With {
            .FileName = "pdftotext.exe",
            .Arguments = $"{pdfFile} output.txt",
            .UseShellExecute = False
        }

        Process.Start(psi)?.WaitForExit()

        Dim extractedText As String = File.ReadAllText("output.txt")
        Console.WriteLine(extractedText)
    End Sub
End Module

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

class Program
{
    static void Main()
    {
        var pdf = PdfDocument.FromFile("document.pdf");

        //提取文字from all pages
        string allText = pdf.ExtractAllText();
        Console.WriteLine("Extracted Text:");
        Console.WriteLine(allText);

        //提取文字from specific page
        string pageText = pdf.ExtractTextFromPage(0);
        Console.WriteLine($"\nFirst Page Text:\n{pageText}");
    }
}

Imports IronPdf
Imports System

Class Program
    Shared Sub Main()
        Dim pdf = PdfDocument.FromFile("document.pdf")

        '提取文字from all pages
        Dim allText As String = pdf.ExtractAllText()
        Console.WriteLine("Extracted Text:")
        Console.WriteLine(allText)

        '提取文字from specific page
        Dim pageText As String = pdf.ExtractTextFromPage(0)
        Console.WriteLine(vbCrLf & "First Page Text:" & vbCrLf & pageText)
    End Sub
End Class